US official: Mexican cartels murder, kidnap in US U.S. drug czar John Walters said Friday that Mexico's drug cartels are crossing the border to kidnap and kill inside the United States, and promised that an anti-drug aid package to help Mexico to fight the gangs will be ready soon. Walters, the director of the White House Office of National Drug Control Policy, was in Mexico for two days to discuss efforts with local officials to stem killings, weapons trafficking and money laundering by Mexican cartels and their U.S. associates. "Some of these groups not only engage in crime and violence not only in Mexico and along the border, but they come across and kidnap, murder and carry out assassinations," Walters told reporters. "These groups do not respect the border."....