Hillary Clinton's "3 a.m. phone call" ad could have been a devastating attack on Obama's competence and experience. It failed to have an impact on voters because it ran four years too soon. Against the backdrop of a sleeping child, the ad's narrator says there's something going on in the world, and a phone is ringing in the White House. He asks, who do you want answering the phone? Someone who knows the military, world leaders, and is tested and ready to lead? Unfortunately for Clinton, almost no one was interested in competence or national security in the last presidential...