PHOENIX - Gov. Jan Brewer has called off a September border conference in Phoenix due to Mexican governors' objections to Arizona's tough new immigration enforcement law, though some officials are discussing holding the annual gathering elsewhere. It was Arizona's turn to host the 28th annual U.S.-Mexico Border Governors Conference for four U.S. governors and six from Mexico. But Brewer said Wednesday the meeting was canceled because the Mexican governors planned to boycott it. Brewer said she was disappointed about the boycott and hoped the governors of New Mexico, Texas and California would support her decision. "The people of Arizona and...