In early May, GOP presidential candidate Herman Cain said it would be illegal for the Obama administration to assassinate Anwar al-Awlaki, a U.S. citizen and suspected Yemeni terrorist known to be included on a "kill list" maintained by U.S. military and intelligence branches. "In his case, no, because he's an American citizen," Cain said after a nationally televised presidential debate on May 5, when asked specifically about the Obama administration's targeting of al-Awlaki. "If he's an American citizen, which is the big difference, then he should be charged, and he should be arrested and brought to justice." Several weeks later,...