I predict this exchange between a reporter and McCarthy...
"What evidence of high crimes and misdemeanors do you have to go forward with impeachment?"
"In two words - Hunter Biden."
The right-wing doesn't need a real reason or even a reason that makes sense. They just need something that can fit on bumper sticker. Plus - there's the added benefit that mocking norms and not even pretending about the way things should work drives libs insane.