The 99th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from January 3, 1985, to January 3, 1987, during the fifth and sixth years of Ronald Reagan's presidency. The apportionment of seats in the House of Representatives was based on the 1980 United States census. The Republicans maintained control of the Senate, while the Democrats maintained control of the House of Representatives – albeit with both majorities slightly reduced from the 98th Congress. This is the most recent Congress to feature a Republican senator from Maryland, Charles Mathias, who retired at the end of the Congress. This is also the most recent Congress in which no Democratic women Senators served and the most recent Congress in which more Republican women Senators served than Democratic women Senators. This was the most recent session of Congress prior to the 116th to feature a Republican Senate/Democratic House split and had a third-party House member.

Major events

Major legislation

Party summary

Senate

[Party standings on the opening day of the 99th Congress

{{legend|#0000ff|47 Democratic Senators}} {{legend|#ff0000|53 Republican Senators|undefined | upload.wikimedia.org/wikipedia/commons/c/cc/099senate.svg]

House of Representatives

[[Image:99 us house membership.png|thumb|320px|

Leadership

Senate

Majority (Republican) leadership

Minority (Democratic) leadership

House of Representatives

Majority (Democratic) leadership

Minority (Republican) leadership

Caucuses

Members

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

Senate

Senators are popularly elected statewide every six years, with one-third beginning new six-year terms with each Congress, In this Congress, Class 3 meant their term ended with this Congress, facing re-election in 1986; Class 1 meant their term began in the last Congress, facing re-election in 1988; and Class 2 meant their term began in this Congress, facing re-election in 1990.

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

[Senators' party membership by state at the opening of the 99th Congress in January 1985

{{legend|#0044aa|2 Democrats}} {{legend|#660080|1 Democrat and 1 Republican}} {{legend|#aa0000|2 Republicans|undefined | upload.wikimedia.org/wikipedia/commons/d/d7/99th///United///States///Congress///Senators.svg]

House of Representatives

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Non-voting members

Changes in membership

Senate

House of Representatives

Committees

Senate

House of Representatives

Joint committees

Employees

Legislative branch agency directors

Senate

House of Representatives