116th United States Congress

The 116th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the Senate and the House of Representatives. It convened in Washington, D.C., on January 3, 2019, and ended on January 3, 2021, during the final two years of Donald Trump's presidency. Senators elected to regular terms in 2014 finished their terms in this Congress, and House seats were apportioned based on the 2010 census.

In the November 2018 midterm elections, the Democratic Party won a new majority in the House, while the Republican Party increased its majority in the Senate. Consequently, this was the first split Congress since the 113th Congress of 2013–2015, and the first Republican Senate–Democratic House split since the 99th Congress of 1985–1987. This Congress was the youngest incoming class by mean age, compared to the previous three the incoming class of freshman representatives, and the most demographically diverse in history.

Upon joining the Libertarian Party on May 1, 2020, Justin Amash became the first member of Congress to represent a political party other than the Democrats or the Republicans since Rep. William Carney, who served as a Conservative before switching to the Republican Party in 1985. Before joining the Libertarian Party, Amash had been serving as an independent since his departure from the Republican Party on July 4, 2019. Paul Mitchell also left the Republicans in December 2020, becoming an independent. Neither incumbent ran for re-election.

As of 2024, this was the last time Republicans held Senate seats in Georgia and Colorado, and the last time Democrats held a Senate seat in Alabama.