As House Democrats vote Tuesday to stop President Trump’s emergency declaration on the southern border, congressional Republicans should ask themselves: Why is it that every other president is permitted by courts to exercise “executive discretion,” and yet Trump isn’t?

A New York Times report on Monday set up the scene for weak-willed Senate Republicans, writing that, “The [Democrat-controlled] House’s vote on a declaration of disapproval will force Republicans to choose between the congressional prerogative over federal spending established in the Constitution and a president determined to go around the legislative branch to secure funds for a border wall that Congress has refused to grant.”