Mexico said on Tuesday it had extended a joint crackdown with the United States on immigrant traffickers, in keeping with a pledge on security made at a North American summit last week. The joint program, which includes intelligence sharing, coordinated patrols and information campaigns for would-be undocumented migrants, now will include the U.S. border states of New Mexico and Texas and Mexico’s Chihuahua state. The patrols began last August in Mexico’s Baja California Norte and Sonora states, and in Arizona, where half the almost 1.2 million illegal immigrants nabbed crossing from Mexico last year were arrested. Full Story