1st United States Congress

The apportionment of seats in the House of Representatives was based on the provisions of Article I, Section 2, Clause 3, of the Constitution.

Members are informally grouped into factions of similar interest, based on an analysis of their voting record.

During this congress, two Senate seats were added for North Carolina and Rhode Island when each ratified the Constitution.

Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress.

Members are informally grouped into factions of similar interest, based on an analysis of their voting record.

[4] New York, North Carolina, and Rhode Island were the last states to ratify the U.S. Constitution and, due to their late ratification, were unable to send full representation at the beginning of this Congress.

When George Washington took the oath of office on April 30, 1789, there were many questions on how much power the president of the United States should be accorded.

The department of war managed military aspects, which was run by Henry Knox.

Congress Hall in Philadelphia , meeting place of this Congress's third session.
Statue of George Washington in front of Federal Hall , where he was first inaugurated as president.
Senators' party membership by state at the opening of the 1st Congress in March 1789.
2 Anti-Administration
1 Anti-Administration and 1 Pro-Administration
2 Pro-Administration
Senate President
John Adams
Senate President pro tempore
John Langdon
Speaker of the House
Frederick Muhlenberg of Pennsylvania