If McConnell voted to convict, other Republicans would surely follow. But no GOP senators have said how they will vote, and two-thirds of the Senate is needed.
Still, some Republicans have told Trump to resign, including Pennsylvania Sen. Pat Toomey and Alaska Sen. Lisa Murkowski, and few are defending him.
Republican Sen. Ben Sasse of Nebraska has said he would take a look at what the House approves, but stopped short of committing to support it.
Other Republicans have said that impeachment would be divisive. South Carolina Sen. Lindsey Graham, long a key ally of the president, has been critical of his behavior in inciting the riots but said impeachment “will do far more harm than good.”
Utah Sen. Mitt Romney was the only Republican to vote to convict Trump in last year's impeachment trial, after the House impeached Trump over his dealings with the president of Ukraine.
In the House, 10 Republicans joined Democrats in voting to impeach Trump, including Wyoming Rep. Liz Cheney, the third-ranking Republican. Every single House Republican voted against Trump's first impeachment in 2019.