I agree it seems like common sense; but if CodePink can send $600K to our enemies and Cindy Sheehan can sashay to Cuba against State Department advice and communists can spray paint the Capitol building unmolested by the authorities, it seems that normal citizens have to make their commonsense ideas known to our Congress. They don't seem to be making many commonsense decisions on their own; and the AG under Bush is a joke when it comes to treason and sedition.
The problem with the concept of "common sense" is that it really isn't all that common.