Sen. John McCain, R-Ariz., said on Thursday the operations of drug cartels along the U.S.-Mexico border are tantamount to war and urged a top military commander to deploy high-tech military systems to monitor activities in the area. "I can make an argument that we are [engaged] in combat on the border," McCain said during a hearing of the Senate Armed Services Committee, which was considering the nomination of Vice Adm. James "Sandy" Winnefeld Jr. to head U.S. Northern Command. He called the $65 billion-per-year drug trade in that region, which has resulted in murders on both sides of the border,...