A top House Republican ally of President Donald Trump delivered a warning to former Trump lawyer and fixer Michael Cohen on the eve of Cohen's scheduled public testimony before a congressional committee investigating the president.

Florida Rep. Matt Gaetz implied in a tweet Tuesday that Cohen's wife is "about to learn a lot" about Cohen, suggesting without offering any evidence that he's had extramarital affairs — raising immediate accusations that Gaetz was trying to intimidate Cohen.

Congressional Republicans and Trump's aides have been attacking Cohen's credibility, calling him a convicted liar, prior to his testimony Wednesday before the House Committee on Oversight and Reform, in which he's said to be planning to depict his former boss as having committee criminal acts. Cohen pleaded guilty to nine felonies, including lying to Congress.