Republican Sen. Bill Cassidy stated on CBS's Face the Nation that he does not know whether President Trump understands the Senate is a separate branch and that the president sometimes treats Congress as an appendage. Cassidy, who lost his primary to a Trump-endorsed challenger, also said Congress will continue holding Trump accountable after his departure along with Sens. Thom Tillis and John Cornyn. The remarks drew commentary across ideological lines regarding institutional norms and executive power.