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.

The 2018 United States elections were held on Tuesday, November 6, 2018. These midterm elections occurred during Incumbent Republican President Donald Trump's term. Although the Republican Party increased its majority in the Senate, unified Republican control of Congress and the White House was brought to an end when the Democratic Party won control of the House of Representatives in what was widely characterized as a "blue wave" election as Democrats also gained governorships, statewide offices, and state legislative chambers.