Several Republicans grew more receptive this week to the House impeachment inquiry into President Donald Trump after acting Chief of Staff Mick Mulvaney on Thursday said in a televised briefing that seeking help to investigate Democrats was part of the reason military aid to Ukraine was temporarily withheld.

While Republican lawmakers on Capitol Hill have signaled they’re eager to learn more from the impeachment investigation led by House Intelligence Chairman Adam B. Schiff, 2016 GOP presidential candidate and former Ohio Gov. John Kasich said Friday that he is “across the Rubicon” and Trump should be impeached.

“I say it with great sadness,” Kasich told CNN, adding that if he were in the House, he would vote to move forward with impeachment.

Florida Rep. Francis Rooney has broken with many of his GOP colleagues who have continued to back the president, telling CNN in an interview Friday that “whatever might have been gray and unclear before is certainly clear right now” with regard to a quid pro quo of military aid to Ukraine for an investigation into Hillary Clinton and the Democratic National Committee.

The Florida Republican, who is considering retiring rather than seek reelection with Trump at the top of the ballot, acknowledged that his criticism of the president’s alleged demands could damage him politically.