(snip) McCain said the presence of the Guard will not only help prevent the violence in Mexico from spilling across the border, but will also take some pressure off of the Border Patrol and U.S. Customs. "When the bad guys see Americans in uniform, it has an effect on them, no doubt about it," McCain said. "But also there is work that Guard personnel could do to relieve the burden from Border Patrol and Customs." That being said, McCain added that cooperation with Mexico on border issues will continue to be important. As part of his trip to Yuma, McCain...