Port-au-Prince, Haiti — Desperate efforts continued on Tuesday to save a group of missionaries, most of them Americans, being held for ransom by a criminal gang in Haiti. FBI agents were working with local authorities in the tiny Caribbean nation to find the 16 U.S. nationals and one Canadian who were kidnapped on Saturday. The gang was asking for $1 million for each hostage — $17 million total — to release the missionaries, a high-ranking government source confirmed to CBS News. The dollar amount was first reported by The Wall Street Journal.... ,,,Gagliano said that if it became clear the...