That’s pretty galling. Not because there aren’t some low SAT scores hanging out in the U.S. Capitol but because you don’t have to go so far as former Secretary of State Rex Tillerson’s alleged observation that his former boss is “dumb as a rock” to conclude that if the president can understand it, surely somebody in the legislative branch can, too. Congress reviews all kinds of matters that are beyond the average person’s comfort level, including actual rocket science — like how much NASA should be spending on space exploration and whether the throw-weights of the next generation of ballistic missiles are adequate. Just as happens in the executive branch, House Democrats have a bunch of smart folks around to dissect the details and explain them. But then everybody, including Ms. Sanders, knows that.