No one appointed the United States the world’s policeman. The government’s founding document, the Constitution, does not and could not do so. Obama and Kerry have tried hard to invoke “national security” as grounds for bombing Syria, but no one believes Assad threatens Americans. He has made no such statements and taken no threatening actions. He is engulfed in a sectarian civil war. Inexcusably, Obama has taken sides in that civil war — the same side as the Syrian al-Qaeda affiliate — but still Assad poses no danger to Americans. Bombing would make him more — not less — of a threat.