If you were president of the United States, would you hire an alleged former spy for Fidel Castro to be ambassador to El Salvador, a country teetering on the brink of hard-core socialism? President Obama just did. On Dec. 9, Obama nominated Mari Del Carmen Aponte to be ambassador to El Salvador, despite the fact that in the late 1990s, the FBI discovered that she was working with Cuban intelligence officers. According to Insight Magazine, "When the FBI eventually questioned her about her involvement with Cuban intelligence, she reportedly refused to cooperate." Why would Aponte escape the Obama administration's scrutiny?...