Dershowitz argues in the book that collusion would be a “political sin” that doesn’t meet the Constitution’s specification of “treason, bribery, or other high crimes and misdemeanors” for removal from office.

Judicial review might be triggered, he writes, because “this president (and perhaps others) might well refuse to leave office if Congress voted to impeach and remove him based on ‘offenses’ that were not among those enumerated in the Constitution.”

“A Supreme Court that inserted itself into the Bush v. Gore election in order to avoid a constitutional crisis might well decide to review a House decision to impeach and a Senate decision to remove a president who is not accused and convicted of a specified constitutional crime,” Dershowitz adds.