Sen. Ted Cruz, R-Texas, is renewing a push for Congress to pass legislation that would revoke the citizenship of any American who tries to join the Islamic State or other terrorist groups. Cruz thinks that banning people from terrorist-stricken countries from entering the U.S. only deals with half of the problem, and that the federal government also needs to worry about U.S. citizens who may try the same thing. "If an American citizen travels abroad and joins a terrorist group waging jihad on America, attempting to murder innocent Americans, this legislation would strip that individual of their U.S. citizenship, so...