John Hammar is a USMC veteran, having served his tour of duty in Iraq. Four month's ago: The Mexican President would apparently have to go up against the notorious Zeta Drug Cartel to get him released by Mexican authorities, and presumably has been unwilling to do so. U.S. Marine Jon Hammar Has Been Left Behind in a Mexican Prison | Independent Sentinel Those working for Hammar's release are petitioning President Obama to interveene. Tell President Pena Nieto go get Hammar out of there and get him home by Christmas. He will be a hero. And if he does not, he should be adivsed that American aid to Mexico will be immediately very scarce. Again the U.S. media seems reluctant to focus on this story. But public pressure has and will make a difference.