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30th United States Congress
	; ; 29th ←; → 31st; ;
	; ; United States Capitol (1846);
March 4, 1847 – March 4, 1849
Senate President	; George M. Dallas (D)
Senate President pro tem	; David R. Atchison (D)
House Speaker	; Robert C. Winthrop (W)
Members	60 senators; 230 members of the House; 2 non-voting delegates
Senate Majority	Democratic
House Majority	Whig
Sessions
	; 1st: December 6, 1847 – August 14, 1848; 2nd: December 4, 1848 – March 3, 1849

The Thirtieth United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1847, to March 4, 1849, during the last two years of the administration of President James K. Polk. The apportionment of seats in the House of Representatives was based on the Sixth Census of the United States in 1840. The Senate had a Democratic majority, and the House had a Whig majority. It was the only Congress in which Abraham Lincoln served.

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7 Members
- 7.1 Senate
  - 7.1.1 Alabama
  - 7.1.2 Arkansas
  - 7.1.3 Connecticut
  - 7.1.4 Delaware
  - 7.1.5 Florida
  - 7.1.6 Georgia
  - 7.1.7 Illinois
  - 7.1.8 Indiana
  - 7.1.9 Iowa
  - 7.1.10 Kentucky
  - 7.1.11 Louisiana
  - 7.1.12 Maine
  - 7.1.13 Maryland
  - 7.1.14 Massachusetts
  - 7.1.15 Michigan
  - 7.1.16 Mississippi
  - 7.1.17 Missouri
  - 7.1.18 New Hampshire
  - 7.1.19 New Jersey
  - 7.1.20 New York
  - 7.1.21 North Carolina
  - 7.1.22 Ohio
  - 7.1.23 Pennsylvania
  - 7.1.24 Rhode Island
  - 7.1.25 South Carolina
  - 7.1.26 Tennessee
  - 7.1.27 Texas
  - 7.1.28 Vermont
  - 7.1.29 Virginia
  - 7.1.30 Wisconsin
- 7.2 House of Representatives
  - 7.2.1 Alabama
  - 7.2.2 Arkansas
  - 7.2.3 Connecticut
  - 7.2.4 Delaware
  - 7.2.5 Florida
  - 7.2.6 Georgia
  - 7.2.7 Illinois
  - 7.2.8 Indiana
  - 7.2.9 Iowa
  - 7.2.10 Kentucky
  - 7.2.11 Louisiana
  - 7.2.12 Maine
  - 7.2.13 Maryland
  - 7.2.14 Massachusetts
  - 7.2.15 Michigan
  - 7.2.16 Mississippi
  - 7.2.17 Missouri
  - 7.2.18 New Hampshire
  - 7.2.19 New Jersey
  - 7.2.20 New York
  - 7.2.21 North Carolina
  - 7.2.22 Ohio
  - 7.2.23 Pennsylvania
  - 7.2.24 Rhode Island
  - 7.2.25 South Carolina
  - 7.2.26 Tennessee
  - 7.2.27 Texas
  - 7.2.28 Vermont
  - 7.2.29 Virginia
  - 7.2.30 Wisconsin
  - 7.2.31 Non-voting members

8 Changes in membership
- 8.1 Senate
- 8.2 House of Representatives

9 Committees
- 9.1 Senate
- 9.2 House of Representatives
- 9.3 Joint committees

10 Employees
- 10.1 Senate
- 10.2 House of Representatives

11 See also

12 References

13 External links

Major events

Sutter's Mill, origin of the California Gold Rush

July 1, 1847: United States issued its first postage stamps

January 24, 1848: Gold found at Sutter's Mill, beginning the California Gold Rush

January 31, 1848: Washington Monument established

February 23, 1848: Former President John Quincy Adams, now a Congressman representing Massachusetts, dies in the Speaker's office after suffering a stroke in the House Chambers.

July 19, 1848: Seneca Falls Convention

November 7, 1848: U.S. presidential election, 1848: Whig Zachary Taylor defeated Lewis Cass in the first US presidential election held in every state on the same day.

1846–1848: Mexican–American War

Major legislation

March 3, 1849: United States Department of the Interior established, sess. 2, ch. 108, 9 Stat. 395

March 3, 1849: Gold Coinage Act, sess. 2, ch. 109, 9 Stat. 397

Treaty

Mapa de los Estados Unidos de Méjico by John Distrunell: the 1847 map used during negotiations of the Treaty of Guadalupe Hidalgo.

February 2, 1848: Treaty of Guadalupe Hidalgo signed, ending the Mexican–American War and ceding to the United States virtually all of what is today the southwest United States.

States admitted and territories established

May 29, 1848: Wisconsin admitted as the 30th U.S. state, sess. 1, ch. 50, 9 Stat. 235

August 14, 1848: Oregon Territory was formed from territory ceded by Great Britain and others.

March 3, 1849: Minnesota Territory formed from the Wisconsin Territory, sess. 2, ch. 121, 9 Stat. 403

Party summary

Senate

During this congress, two Senate seats were added for the new state of Wisconsin.

	Party (shading shows control)				Total	Vacant

	Democratic (D)	Independent Democratic (ID)	Whig (W)	Other
End of the previous congress	31	0	24	(Liberty) 1	56	2

Begin	33	1	20	0	54	2
End	38	1	21	0	60	0
Final voting share	7001633000000000000♠63.3%	7000170000000000000♠1.7%	7001350000000000000♠35.0%	5000000000000000000♠0.0%

Beginning of the next congress	33	0	25	0	58	2

House of Representatives

House seats by party holding plurality in state
Up to 100% Democratic	Up to 100% Whig
60+ to 80% Democratic	60+ to 80% Whig
Up to 60% Democratic	Up to 60% Whig

During this congress, two House seats were added for the new state of Wisconsin.

	Party (shading shows control)					Total	Vacant

	American (A)	Democratic (D)	Independent Democratic (ID)	Whig (W)	Independent (I)
End of the previous congress	12	137	0	77	0	226	2

Begin	1	107	2	116	1	227	1
End	1	110	3	115	1	230	0
Final voting share	6999400000000000000♠0.4%	7001478000000000000♠47.8%	7000130000000000000♠1.3%	7001500000000000000♠50.0%	6999400000000000000♠0.4%

Beginning of the next congress	1	113	0	107	0	221	1

Leadership

President of the Senate
George M. Dallas

Senate

President: George M. Dallas (D)

President pro tempore: David R. Atchison (D)

House of Representatives

Speaker: Robert C. Winthrop (W)

Members

This list is arranged by chamber, then by state. Senators are listed by class and Representatives are listed by district.

Skip to House of Representatives, below

Senate

Alabama

2. Dixon H. Lewis (D), until October 25, 1848
- Benjamin Fitzpatrick (D), from November 25, 1848

3. Arthur P. Bagby (D), until June 16, 1848
- William R. D. King (D), from July 1, 1848

Arkansas

2. Chester Ashley (D), until April 29, 1848
- William K. Sebastian (D), from May 12, 1848

3. Ambrose H. Sevier (D), until March 15, 1848
- Solon Borland (D), from March 30, 1848

Connecticut

1. Jabez W. Huntington (W), until November 1, 1847
- Roger S. Baldwin (W), from November 11, 1847

3. John M. Niles (D)

Delaware

1. John M. Clayton (W), until February 23, 1849
- John Wales (W), from February 23, 1849

2. Presley Spruance (W)

Florida

1. David Levy Yulee (D)

3. James D. Westcott, Jr. (D)

Georgia

2. John Macpherson Berrien (W)

3. Walter T. Colquitt (D), until February 4, 1848
- Herschel V. Johnson (D), from February 4, 1848

Illinois

2. Stephen A. Douglas (D)

3. Sidney Breese (D)

Indiana

1. Jesse D. Bright (D)

3. Edward A. Hannegan (D)

Iowa

2. George Wallace Jones (D), from December 7, 1848

3. Augustus C. Dodge (D), from December 7, 1848

Kentucky

2. Joseph R. Underwood (W)

3. John J. Crittenden (W), until June 12, 1848
- Thomas Metcalfe (W), from June 23, 1848

Louisiana

2. Solomon W. Downs (D)

3. Henry Johnson (W)

Maine

1. John Fairfield (D), until December 24, 1847
- Wyman B. S. Moor (D), January 5, 1848 – June 7, 1848
- Hannibal Hamlin (D), from June 7, 1848

2. James W. Bradbury (D)

Maryland

1. Reverdy Johnson (W)

3. James Pearce (W)

Massachusetts

1. Daniel Webster (W)

2. John Davis (W)

Michigan

1. Lewis Cass (D), until May 29, 1848
- Thomas Fitzgerald (D), from June 8, 1848

2. Alpheus Felch (D)

Mississippi

1. Jesse Speight (D), until May 1, 1847
- Jefferson Davis (D), from August 10, 1847

2. Henry S. Foote (D)

Missouri

1. Thomas H. Benton (D)

3. David R. Atchison (D)

New Hampshire

2. John P. Hale (ID)

3. Charles G. Atherton (D)

New Jersey

1. William L. Dayton (W)

2. Jacob W. Miller (W)

New York

1. Daniel S. Dickinson (D)

3. John A. Dix (D)

North Carolina

2. Willie P. Mangum (W)

3. George E. Badger (W)

Ohio

1. Thomas Corwin (W)

3. William Allen (D)

Pennsylvania

1. Daniel Sturgeon (D)

3. Simon Cameron (D)

Rhode Island

1. Albert C. Greene (W)

2. John H. Clarke (W)

South Carolina

2. John C. Calhoun (D)

3. Andrew Butler (D)

Tennessee

1. Hopkins L. Turney (D)

2. John Bell (W), from November 22, 1847

Texas

1. Thomas J. Rusk (D)

2. Samuel Houston (D), from December 18, 1847.

Vermont

1. Samuel S. Phelps (W)

3. William Upham (W)

Virginia

1. James M. Mason (D)

2. Robert M. T. Hunter (D)

Wisconsin

1. Henry Dodge (D), from June 8, 1848 (newly admitted state)

3. Isaac P. Walker (D), from June 8, 1848 (newly admitted state)

Senate President pro tempore
David R. Atchison

House of Representatives

The names of members of the House of Representatives are preceded by their district numbers.

Alabama

1. John Gayle (W)

2. Henry W. Hilliard (W)

3. Sampson W. Harris (D)

4. Samuel W. Inge (D)

5. George S. Houston (D)

6. Williamson R. W. Cobb (D)

7. Franklin W. Bowdon (D)

Arkansas

At-large. Robert W. Johnson (D)

Connecticut

1. James Dixon (W)

2. Samuel D. Hubbard (W)

3. John A. Rockwell (W)

4. Truman Smith (W)

Delaware

At-large. John W. Houston (W)

Florida

At-large. Edward C. Cabell (W)

Georgia

1. Thomas B. King (W)

2. Alfred Iverson, Sr. (D)

3. John W. Jones (W)

4. Hugh A. Haralson (D)

5. John H. Lumpkin (D)

6. Howell Cobb (D)

7. Alexander Stephens (W)

8. Robert Toombs (W)

Illinois

1. Robert Smith (ID)

2. John A. McClernand (D)

3. Orlando B. Ficklin (D)

4. John Wentworth (D)

5. William A. Richardson (D), from December 6, 1847

6. Thomas J. Turner (D)

7. Abraham Lincoln (W)

Indiana

1. Elisha Embree (W)

2. Thomas J. Henley (D)

3. John L. Robinson (D)

4. Caleb B. Smith (W)

5. William W. Wick (D)

6. George G. Dunn (W)

7. Richard W. Thompson (W)

8. John Pettit (D)

9. Charles W. Cathcart (D)

10. William R. Rockhill (D)

Iowa

1. William Thompson (D)

2. Shepherd Leffler (D)

Kentucky

1. Linn Boyd (D)

2. Beverly L. Clarke (D)

3. Samuel Peyton (D)

4. Aylette Buckner (W)

5. John B. Thompson (W)

6. Green Adams (W)

7. W. Garnett Duncan (W)

8. Charles S. Morehead (W)

9. Richard French (D)

10. John P. Gaines (W)

Louisiana

1. Emile La Sére (D)

2. Bannon G. Thibodeaux (W)

3. John H. Harmanson (D)

4. Isaac E. Morse (D)

Maine

1. David Hammons (D)

2. Asa W. H. Clapp (D)

3. Hiram Belcher (W)

4. Franklin Clark (D)

5. Ephraim K. Smart (D)

6. James S. Wiley (D)

7. Hezekiah Williams (D)

Maryland

1. John G. Chapman (W)

2. J. Dixon Roman (W)

3. Thomas W. Ligon (D)

4. Robert M. McLane (D)

5. Alexander Evans (W)

6. John W. Crisfield (W)

Massachusetts

1. Robert C. Winthrop (W)

2. Daniel P. King (W)

3. Amos Abbott (W)

4. John G. Palfrey (W)

5. Charles Hudson (W)

6. George Ashmun (W)

7. Julius Rockwell (W)

8. John Quincy Adams (W), until February 23, 1848
- Horace Mann (W), from April 3, 1848

9. Artemas Hale (W)

10. Joseph Grinnell (W)

Michigan

1. Robert McClelland (D)

2. Edward Bradley (D), until August 5, 1847
- Charles E. Stuart (D), from December 6, 1847

3. Kinsley S. Bingham (D)

Mississippi

1. Jacob Thompson (D)

2. Winfield S. Featherston (D)

3. Patrick W. Tompkins (W)

4. Albert G. Brown (D)

Missouri

1. James B. Bowlin (D)

2. John Jameson (D)

3. James S. Green (D)

4. Willard P. Hall (D)

5. John S. Phelps (D)

New Hampshire

1. Amos Tuck (I)

2. Charles H. Peaslee (D)

3. James Wilson (W)

4. James H. Johnson (D)

New Jersey

1. James G. Hampton (W)

2. William A. Newell (W)

3. Joseph E. Edsall (D)

4. John Van Dyke (W)

5. Dudley S. Gregory (W)

New York

1. Frederick W. Lord (D)

2. Henry C. Murphy (D)

3. Henry Nicoll (D)

4. William B. Maclay (D)

5. Frederick A. Tallmadge (W)

6. David S. Jackson (D), until April 19, 1848
- Horace Greeley (W), from December 4, 1848

7. William Nelson (W)

8. Cornelius Warren (W)

9. Daniel B. St. John (W)

10. Eliakim Sherrill (W)

11. Peter H. Silvester (W)

12. Gideon Reynolds (W)

13. John I. Slingerland (W)

14. Orlando Kellogg (W)

15. Sidney Lawrence (D)

16. Hugh White (W)

17. George Petrie (ID)

18. William Collins (D)

19. Joseph Mullin (W)

20. Timothy Jenkins (D)

21. George A. Starkweather (D)

22. Ausburn Birdsall (D)

23. William Duer (W)

24. Daniel Gott (W)

25. Harmon S. Conger (W)

26. William T. Lawrence (W)

27. John M. Holley (W), until March 8, 1848
- Esbon Blackmar (W), from December 4, 1848

28. Elias B. Holmes (W)

29. Robert L. Rose (W)

30. David Rumsey, Jr. (W)

31. Dudley Marvin (W)

32. Nathan K. Hall (W)

33. Harvey Putnam (W)

34. Washington Hunt (W)

North Carolina

1. Thomas L. Clingman (W)

2. Nathaniel Boyden (W)

3. Daniel M. Barringer (W)

4. Augustine H. Shepperd (W)

5. Abraham W. Venable (D)

6. John R. J. Daniel (D)

7. James I. McKay (D)

8. Richard S. Donnell (W)

9. David Outlaw (W)

Ohio

1. James J. Faran (D)

2. David Fisher (W)

3. Robert C. Schenck (W)

4. Richard S. Canby (W)

5. William Sawyer (D)

6. Rodolphus Dickinson (D)

7. Jonathan D. Morris (D)

8. John L. Taylor (W)

9. Thomas O. Edwards (W)

10. Daniel Duncan (W)

11. John K. Miller (D)

12. Samuel F. Vinton (W)

13. Thomas Ritchey (D)

14. Nathan Evans (W)

15. William Kennon, Jr. (D)

16. John D. Cummins (D)

17. George Fries (D)

18. Samuel Lahm (D)

19. John Crowell (W)

20. Joshua R. Giddings (W)

21. Joseph M. Root (W)

Pennsylvania

1. Lewis C. Levin (A)

2. Joseph R. Ingersoll (W)

3. Charles Brown (D)

4. Charles J. Ingersoll (D)

5. John Freedley (W)

6. John W. Hornbeck (W), until January 16, 1848
- Samuel A. Bridges (D), from March 6, 1848

7. Abraham R. McIlvaine (W)

8. John Strohm (W)

9. William Strong (D)

10. Richard Brodhead (D)

11. Chester P. Butler (W)

12. David Wilmot (D)

13. James Pollock (W)

14. George N. Eckert (W)

15. Henry Nes (W)

16. Jasper E. Brady (W)

17. John Blanchard (W)

18. Andrew Stewart (W)

19. Job Mann (D)

20. John Dickey (W)

21. Moses Hampton (W)

22. John W. Farrelly (W)

23. James Thompson (D)

24. Alexander Irvin (W)

Rhode Island

1. Robert B. Cranston (W)

2. Benjamin B. Thurston (D)

South Carolina

1. James A. Black (D), until April 3, 1848
- Daniel Wallace (D), from June 12, 1848

2. Richard F. Simpson (D)

3. Joseph A. Woodward (D)

4. Alexander D. Sims (D), until November 22, 1848
- John McQueen (D), from February 12, 1849

5. Armistead Burt (D)

6. Isaac E. Holmes (D)

7. R. Barnwell Rhett (D)

Tennessee

1. Andrew Johnson (D)

2. William M. Cocke (W)

3. John H. Crozier (W)

4. Hugh L. W. Hill (D)

5. George W. Jones (D)

6. James H. Thomas (D)

7. Meredith P. Gentry (W)

8. Washington Barrow (W)

9. Lucien B. Chase (D)

10. Frederick P. Stanton (D)

11. William T. Haskell (W)

Texas

1. David S. Kaufman (D)

2. Timothy Pilsbury (D)

Vermont

1. William Henry (W)

2. Jacob Collamer (W)

3. George P. Marsh (W)

4. Lucius B. Peck (D)

Virginia

1. Archibald Atkinson (D)

2. George Dromgoole (D), until April 27, 1847
- Richard K. Meade (D), from August 5, 1847

3. Thomas S. Flournoy (W)

4. Thomas S. Bocock (D)

5. William L. Goggin (W)

6. John Botts (W)

7. Thomas H. Bayly (D)

8. Richard L. T. Beale (D)

9. John Pendleton (W)

10. Henry Bedinger (D)

11. James McDowell (D)

12. William B. Preston (W), from November 25, 1847

13. Andrew S. Fulton (W)

14. Robert A. Thompson (D)

15. William G. Brown, Sr. (D)

Wisconsin

1. William P. Lynde (D), from June 8, 1848 (newly admitted state)

2. Mason C. Darling (D), from June 8, 1848 (newly admitted state)

Non-voting members

Wisconsin Territory. John H. Tweedy (W), until May 29, 1848
- Henry H. Sibley, from October 30, 1848

Speaker of the House
Robert C. Winthrop

Changes in membership

The count below reflects changes from the beginning of the first session of this Congress.

Senate

Replacements: 11
- Democrats (D): 4 seat net gain
- Whigs (W): no net change

Deaths: 5

Resignations: 6

Interim appointments: 7

Seats of newly admitted states: 4

State (class)	Vacator	Reason for change	Successor	Date of successor's formal installation
Tennessee (2)	Vacant	Failure to elect. Successor elected November 22, 1847.	John Bell (W)	Elected November 22, 1847.
Iowa (2)	Vacant	Iowa had been admitted to the Union December 28, 1846, but the legislature failed to elect due to a three-way split that prevented any candidate from earning the required number of 30 legislators' votes.^[1] First Senator elected December 7, 1848.	George Wallace Jones (D)	Elected December 7, 1848.
Iowa (3)	Vacant	Iowa had been admitted to the Union December 28, 1846, but the legislature failed to elect due to a three-way split that prevented any candidate from earning the required number of 30 legislators' votes.^[1] First Senator elected December 7, 1848.	Augustus C. Dodge (D)	Elected December 7, 1848.
Texas (2)	Vacant	Legislature failed to elect due to a dispute over who was entitled to fill a vacancy.^[2] Elected December 19, 1847.	Samuel Houston (D)	Seated January 24, 1848.
Mississippi (1)	Jesse Speight (D)	Incumbent died May 1, 1847. Successor appointed August 10, 1847, and then elected January 1848.	Jefferson Davis (D)	Appointed December 5, 1847.
Connecticut (1)	Jabez W. Huntington (W)	Incumbent died November 1, 1847. Successor appointed November 11, 1847, and then elected May 1848.	Roger S. Baldwin (W)	Appointed December 5, 1847.
Maine (1)	John Fairfield (D)	Incumbent died December 24, 1847. Successor appointed January 5, 1848.	Wyman B. S. Moor (D)	Appointed January 5, 1848.
Georgia (3)	Walter T. Colquitt (D)	Incumbent resigned February 4, 1848. Successor appointed February 4, 1848, to finish the term.	Herschel V. Johnson (D)	Appointed February 4, 1848.
Arkansas (3)	Ambrose H. Sevier (D)	Incumbent resigned March 15, 1848. Successor appointed March 30, 1848, to finish the term.	Solon Borland (D)	Appointed March 30, 1848.
Arkansas (2)	Chester Ashley (D)	Incumbent died April 29, 1848. Successor appointed May 12, 1848, and elected sometime thereafter.	William K. Sebastian (D)	Elected May 12, 1848.
Wisconsin (1)	Wisconsin admitted to the Union May 29, 1848. First Senator elected June 8, 1848.		Henry Dodge (D)	Elected June 8, 1848.
Wisconsin (3)	Wisconsin admitted to the Union May 29, 1848. First Senator elected June 8, 1848.		Isaac P. Walker (D)	Elected June 8, 1848.
Michigan (1)	Lewis Cass (D)	Incumbent resigned May 29, 1848, to run for U.S. President. Successor appointed June 8, 1848.	Thomas Fitzgerald (D)	Elected June 8, 1848.
Maine (1)	Wyman B. S. Moor (D)	Interim appointee retired when successor elected June 7, 1848.	Hannibal Hamlin (D)	Elected June 7, 1848.
Kentucky (3)	John J. Crittenden (W)	Incumbent resigned June 12, 1848, to run for Governor of Kentucky. Successor appointed June 23, 1848, and elected sometime thereafter.	Thomas Metcalfe (W)	Elected June 23, 1848.
Alabama (3)	Arthur P. Bagby (D)	Incumbent resigned June 16, 1848, to become U.S. Minister to Russia. Successor elected July 1, 1848.	William R. King (D)	Elected July 1, 1848.
Alabama (2)	Dixon H. Lewis (D)	Incumbent died October 25, 1848. Successor elected November 25, 1848.	Benjamin Fitzpatrick (D)	Elected November 25, 1848.
Delaware (1)	John M. Clayton (W)	Incumbent resigned February 23, 1849, to become U.S. Secretary of State. Successor elected February 23, 1849.	John Wales (W)	Elected February 23, 1849.

House of Representatives

Replacements: 10
- Democrats (D): no net change
- Whigs (W): no net change

Deaths: 7

Resignations: 0

Contested election: 1

Seats of newly admitted states: 2

Total seats with changes: 12

District	Vacator	Reason for change	Successor	Date of successor's formal installation
Illinois 5th	Vacant	Representative Stephen A. Douglas resigned at end of previous congress.	William A. Richardson (D)	Seated December 6, 1847
Virginia 2nd	George Dromgoole (D)	Incumbent died April 27, 1847.	Richard K. Meade (D)	Seated August 5, 1847
Michigan 2nd	Edward Bradley (D)	Incumbent died August 5, 1847.	Charles E. Stuart (D)	Seated December 6, 1847
Pennsylvania 6th	John W. Hornbeck (W)	Incumbent died January 16, 1848.	Samuel A. Bridges (D)	Seated March 6, 1848
Massachusetts 8th	John Quincy Adams (W)	Incumbent died February 23, 1848.	Horace Mann (W)	Seated April 3, 1848
New York 27th	John M. Holley (W)	Incumbent died March 8, 1848.	Esbon Blackmar (W)	Seated December 4, 1848
South Carolina 1st	James A. Black (D)	Incumbent died April 3, 1848.	Daniel Wallace (D)	Seated June 12, 1848
New York 6th	David S. Jackson (D)	James Monroe contested seat after which the House declared the seat vacant April 19, 1848.	Horace Greeley (W)	Seated December 4, 1848
Wisconsin 1st	Wisconsin admitted into the Union May 29, 1848, and seat remained vacant until June 8, 1848.		William P. Lynde (D)	Seated June 8, 1848
Wisconsin 2nd	Wisconsin admitted into the Union May 29, 1848, and seat remained vacant until June 8, 1848.		Mason C. Darling (D)	Seated June 8, 1848
Wisconsin Territory At-large	John H. Tweedy (W)	Incumbent was disqualified May 29, 1848, after the portion of territory he resided in achieved statehood.	Henry H. Sibley	Seated October 30, 1848
South Carolina 4th	Alexander D. Sims (D)	Incumbent died November 22, 1848.	John McQueen (D)	Seated February 12, 1849

Committees

Lists of committees and their party leaders.

Senate

Agriculture

Audit and Control the Contingent Expenses of the Senate

Claims

Commerce

Distributing Public Revenue Among the States (Select)

District of Columbia

Expedition of John C. Fremont (Select)

Finance

Foreign Relations

Indian Affairs

Judiciary

Manufactures

Memorial of Certain Cherokee Claimants (Select)

Military Affairs

Militia

Monuments to Deceased Senators (Select)

Naval Affairs

Oregon Railroad (Select)

Ordnance and War Ships (Select)

Patents and the Patent Office

Pensions

Post Office and Post Roads

Printing

Private Land Claims

Public Buildings and Grounds

Public Lands

Retired List for the Army and the Navy (Select)

Retrenchment

Seventh Census (Select)

Revolutionary Claims

Rivers and Harbors Convention in Chicago (Select)

Roads and Canals

Tariff Bill of 1828 (Special)

Tariff Regulation (Select)

Territories

Whole

House of Representatives

Accounts

Agriculture

Claims

Commerce

District of Columbia

Elections

Engraving

Expenditures in the Navy Department

Expenditures in the Post Office Department

Expenditures in the State Department

Expenditures in the Treasury Department

Expenditures in the War Department

Expenditures on Public Buildings

Foreign Affairs

Indian Affairs

Invalid Pensions

Manufactures

Mileage

Military Affairs

Militia

Naval Affairs

Patents

Post Office and Post Roads

Public Buildings and Grounds

Public Expenditures

Public Lands

Revisal and Unfinished Business

Revolutionary Claims

Roads and Canals

Rules (Select)

Standards of Official Conduct

Territories

Ways and Means

Whole

Joint committees

Enrolled Bills

Employees

Librarian of Congress: John Silva Meehan

Senate

Chaplain: Henry Slicer (Methodist)

Secretary: Asbury Dickens

Sergeant at Arms: Robert Beale

House of Representatives

Chaplain Ralph Gurley (Presbyterian)

Clerk: Thomas J. Campbell

Doorkeeper: Robert E. Horner

Postmaster: John M. Johnson

Reading Clerks: [Data unknown/missing.]

Sergeant at Arms: Nathan Sergeant

References

^ ^a^b Clark, Dan Elbert (1913). "History of Senatorial Elections in Iowa". Iowa. pp. 17–46, 72–79..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}

^ Friend, Llerena (1954). Sam Houston, the Great Designer. University of Texas Press. p. 187. ISBN 0292789114.

Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.

Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.

External links

Statutes at Large, 1789–1875

Senate Journal, First Forty-three Sessions of Congress

House Journal, First Forty-three Sessions of Congress

Biographical Directory of the U.S. Congress

U.S. House of Representatives: House History

U.S. Senate: Statistics and Lists

Congressional Directory for the 30th Congress, 1st Session.

Congressional Directory for the 30th Congress, 3rd Session.

[clark-1] Clark, Dan Elbert (1913). "History of Senatorial Elections in Iowa". Iowa. pp. 17–46, 72–79..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}

[2] Friend, Llerena (1954). Sam Houston, the Great Designer. University of Texas Press. p. 187. ISBN 0292789114.

30th United States Congress
29th ← → 31st
United States Capitol (1846)
March 4, 1847 – March 4, 1849
Senate President	George M. Dallas (D)
Senate President pro tem	David R. Atchison (D)
House Speaker	Robert C. Winthrop (W)
Members	60 senators 230 members of the House 2 non-voting delegates
Senate Majority	Democratic
House Majority	Whig
Sessions
1st: December 6, 1847 – August 14, 1848 2nd: December 4, 1848 – March 3, 1849

30th United States Congress

Contents

Major events

Major legislation

Treaty

States admitted and territories established

Party summary

Senate

House of Representatives

Leadership

Senate

House of Representatives

Members

Senate

Alabama

Arkansas

Connecticut

Delaware

Florida

Georgia

Illinois

Indiana

Iowa

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Mississippi

Missouri

New Hampshire

New Jersey

New York

North Carolina

Ohio

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Vermont

Virginia

Wisconsin

House of Representatives

Alabama

Arkansas

Connecticut

Delaware

Florida

Georgia

Illinois

Indiana

Iowa

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Mississippi

Missouri

New Hampshire

New Jersey

New York

North Carolina

Ohio

Pennsylvania

Rhode Island

South Carolina

Tennessee

Texas

Vermont

Virginia

Wisconsin

Non-voting members

Changes in membership

Senate

House of Representatives

Committees