President Trump on Monday faced accusations of treason and the most sustained criticism from members of his own party since Charlottesville, Va., after an ill-fated press conference alongside Russian President Vladimir Putin united much of the political world against him.

“Vladimir Putin is trying to create mistrust in this country,” said Sen. Ben Sasse, R-Neb., on the Senate floor Monday night. “And today the president of the United States decided to let Vladimir Putin off the hook, and in so doing, he creates an incentive for Putin to ratchet up his campaigns of misinformation.”