EL PASO, Texas – U.S. Secretary of Homeland Security Janet Napolitano said Thursday that security on the southern U.S. border "is better now than it ever has been" and that violence from neighboring Mexico hasn't spilled over in a serious way. Napolitano spoke at the Bridge of The Americas border crossing, after a meeting with the mayors of the border towns of El Paso, Nogales, Ariz., and Yuma, Ariz. Under Secretary of Commerce for International Trade Francisco Sanchez and U.S. Customs and Border Protection Commissioner Alan Bersin also were present. Napolitano said the Department of Homeland Security will deploy 250...