MEXICO CITY (AP) — Confronting a Mexican drug war that is “sowing chaos in our communities,” President Barack Obama signaled Thursday he will not seek renewal of a U.S. assault weapons ban but instead will step up enforcement of laws banning the transfer of such guns across the border. Obama had pledged during his campaign to seek renewal of the ban but has bowed to the reality that such a move would be unpopular in politically key U.S. states and among Republicans as well as some conservative Democrats. Obama met with Mexican President Felipe Calderon, who has been conducting an aggressive fight against drug cartels and had hoped to persuade Obama to push for reinstatement of the gun ban.- – – -Contact The Daily Reveille’s news staff at [email protected]