Trump and his top advisers have discussed the prospect of backing a primary challenge to the Michigan lawmaker — a highly unusual move for a president against a member of his own party that would effectively amount to a warning shot to other Republicans thinking of crossing him. The conversations come as the billionaire DeVos family, which has deep ties to the administration and remains one of Michigan’s most powerful families, has announced it will cut off the congressman. That move could send a signal to other conservative donors deciding whether to invest in Amash.

Trump has raised the primary challenge idea with Vice President Mike Pence and North Carolina Rep. Mark Meadows, a close Trump ally who co-founded the conservative House Freedom Caucus with Amash. Trump has also addressed the subject with Republican National Committee Chairwoman Ronna McDaniel, a former Michigan GOP leader who remains influential in the state…

Others in the president’s inner circle are skeptical that Amash, whose office did not respond to a request for comment, will even seek reelection.