NEW : Clinton says fighting does not pose major threat to U.S. security -- yet . Mexico 's U.S. ambassador says not to share an ` ` - sign '' ` ` Our insatiable demand for illegal drugs fuels the drug trade , '' Clinton says in Mexico . U.S. wants to stop flow of guns , body armor , night - vision goggles to cartels , she says .
NEW : Clinton says fighting does not pose major threat to U.S. security -- yet . Mexico 's U.S. ambassador says willingness to share an `` encouraging sign '' `` Our insatiable demand for illegal drugs fuels the drug trade , '' Clinton says in Mexico . U.S. needs to stop flow of guns , body armor , night-vision goggles to cartels , she says .