The U.S. House of Representatives has impeached Alejandro Majorkas, the Secretary of Homeland Security. The Constitution sets a very high bar for the removal of an officeholder through impeachment. Everyone is certain that this bar will not be cleared in the U.S. Senate. Many onlookers, including plenty of our Republican representatives themselves, therefore wonder, what’s the point? And you might not expect it, but this very issue is at the heart of one of the biggest disagreements in the current Republican party. There is an unwritten parliamentary rule among legislators in leadership: You never call a vote on any measure...