MEXICO CITY — Next time you pop across the Mexican border for a visit, remember to leave your AR-15 semiautomatic assault rifle at home. This year, 123 U.S. citizens have been arrested in Mexico on weapons charges, according to the U.S. Embassy here, and about 70 Americans — including an Orange County man — are now being held, accused or convicted of violating the country's strict Firearms and Explosives Act. In some cases, people honestly forget that they have... (GunPolicy.org)