After reestablishing residency in Utah, Romney announced his campaign for the U.S. Senate seat held by the retiring Orrin Hatch in the 2018 election; he defeated state representative Mike Kennedy in the Republican primary and Democratic nominee Jenny Wilson in the general election. In doing so, he became only the third person ever to be elected governor of one state and U.S. senator for another state (the others are Sam Houston and William Bibb). Romney was sworn in on January 3, 2019. In the first impeachment trial of Donald Trump, he voted to convict Trump, becoming the first senator in U.S. history to vote to convict a president of his own party. Romney voted to convict Trump a second time during his second impeachment trial, following the attack on the Capitol on January 6, 2021, for which he received the Profiles in Courage Award.