U.S. officials said that President Barack Obama will push for Senate ratification of a Latin American arms trafficking treaty, The Associated Press reported. Obama planned to make the announcement after meeting Thursday with Mexican President Felipe Calderon. Officials discussed the plan on the condition of anonymity so they would not pre-empt Obama's first trip to Mexico as president. The regional treaty, adopted by the Organization of American States, was signed by former President Bill Clinton in 1997 but never ratified by the Senate. Officials say the inter-American arms trafficking treaty would curb guns and ammunition trafficking that threatens regional security.