The Republican embrace of President Donald Trump is beginning to show cracks as some rank-and-file GOP lawmakers stepped up their criticism of the president back home in their districts in a week where his former personal lawyer and onetime campaign chairman pleaded to and were found guilty of eight federal crimes apiece.

No one is jumping to conclusions yet about whether Trump should face impeachment. But some Republican lawmakers have been candid in recent days about the prospect of impeaching the president, and what would need to happen for them to consider such a step.

“We’ve got to wait for the investigations to finish, House, Senate, and more,” North Carolina Rep. Walter Jones, who hasn’t shied away from responding sharply to Trump’s controversial remarks in the past, told WITN. “At whatever point, if it’s justified, that they recommend impeachment, then that would be on the table.”

In a series of tweets Thursday, Michigan Rep. Justin Amash said the criminal allegations against Trump are “serious and should be taken seriously, especially by members of Congress.”