Maybe the first, according to Curbelo? He asked Mother Jones to correct a piece saying that Justin Amash was the first Republican who raised impeachment for Trump.
www.motherjones.com/...
* Correction: This article previously stated that Amash was the first Republican to suggest that Trump's alleged actions could be grounds for impeachment. Following publication, a spokeswoman for Curbelo contacted Mother Jones to point out that "Congressman Curbelo was actually the first Republican to mention impeachment."
Curbelo even tweeted the video of his interview last night as proof. Republicans fighting over who was first to say impeach Trump. I'll take it. I hope more join.