After the 2020 presidential election, Rouzer was among 126 House Republicans who supported "Texas v. Pennsylvania", a December 2020 lawsuit that asked the Supreme Court to overturn Biden's electoral victories in Georgia, Michigan, Pennsylvania and Wisconsin. North Carolina Attorney General Josh Stein joined other State Attorneys General in opposing Texas's suit, saying "This suit seeks to overturn the will of the people by throwing out the votes of tens of millions of Americans." The Supreme Court denied Texas's motion for lack of standing under Article III of the Constitution. On January 6, 2021, Rouzer was one of 147 Republican lawmakers who objected to the certification of electoral votes from the 2020 presidential election just hours after a mob of Trump supporters stormed the U.S. Capitol forcing an emergency recess of Congress and resulting in five deaths.