On a phone call with several other top House Republicans on Jan. 8, Mr. McCarthy said Mr. Trump’s conduct on Jan. 6 had been “atrocious and totally wrong.” He faulted the president for “inciting people” to attack the Capitol, saying that Mr. Trump’s remarks at a rally on the National Mall that day were “not right by any shape or any form.”

During that conversation, Mr. McCarthy inquired about the mechanism for invoking the 25th Amendment — the process whereby the vice president and members of the cabinet can remove a president from office — before concluding that was not a viable option. Mr. McCarthy, who was among those who objected to the election results, was uncertain and indecisive, fretting that the Democratic drive to impeach Mr. Trump would “put more fuel on the fire” of the country’s divisions…

During the same Jan. 10 conversation when he said he would call on Mr. Trump to resign, Mr. McCarthy told other G.O.P. leaders he wished the big tech companies would strip some Republican lawmakers of their social media accounts, as Twitter and Facebook had done with Mr. Trump. Members such as Lauren Boebert of Colorado had done so much to stoke paranoia about the 2020 election and made offensive comments online about the Capitol attack.

“We can’t put up with that,” Mr. McCarthy said, adding, “Can’t they take their Twitter accounts away, too?”