cosponsored legislation H.R. 1503 to amend the Federal Election Campaign Act of 1971 to require candidates for the presidency "to include with the campaign committee's statement of organization a copy of the candidate's birth certificate" plus supporting documentation. Introduced without the Republican leadership being informed, Florida Today commented that the bill "stems from fringe opponents of President Barack Obama who, during the 2008 election campaign, questioned whether Obama was born in Hawaii." On December 18, 2019, Marchant voted against both articles of impeachment against Trump. Of the 195 Republicans who voted, all voted against both impeachment articles. Texas v. Pennsylvania In December 2020, Marchant was one of 126 Republican members of the House of Representatives who signed an amicus brief in support of Texas v. Pennsylvania, a lawsuit filed at the United States Supreme Court contesting the results of the 2020 presidential election, in which Joe Biden prevailed over incumbent Donald Trump. The Supreme Court declined to hear the case on the basis that Texas lacked standing under Article III of the Constitution to challenge the results of the election held by another state. Political campaigns During the 2003 Texas redistricting, the 24th District, represented by 13-term Democrat Martin Frost, was reconfigured to be significantly more Republican. The old 24th had covered mostly Democratic areas around Dallas, Fort Worth, and Arlington. However, the reconfigured district shed its portions of Arlington and Fort Worth, replacing them with more suburban and Republican territory around Dallas. Had the district existed in 2000, George W. Bush would have won it with 68 percent of the vote. Marchant ran for the redrawn district and was elected to Congress in 2004. He was reelected in 2006 (with 60% of the ballots cast) and 2008 (with 56% of the ballots cast). In 2014 he joined the newly founded Friends of Wales Caucus. Marchant won his seventh term in the House in the general election held on November 8, 2016. With 154,845 votes (56.2 percent), he defeated Democrat Jan McDowell, who received 108,389 (39.3 percent). Two other candidates held the remaining 4.5 percent of the ballots cast. Marchant narrowly won his eighth term in the House in the general election held on November 6, 2018. With 133,317 votes, 50.6%, with Democrat Jan McDowell receiving 125,231 votes, 47.5%. The margin of victory of 3.1% over his Democratic opponent was a marked reduction from the same campaign between the two