03/01/2010Drug war clashes between Gulf cartel, Zetas may escalate, could affect North Texas Longstanding tensions between the Zetas paramilitary group and their old employers, the Gulf drug cartel, have exploded into a full-blown war, worrying U.S. and Mexican law enforcement officials that a likely protracted battle will further threaten this stretch of the Texas-Mexico border. 02/26/2010 MTV will air 'South Park' with Mexican president It has a caricature of President Felipe Calderon in front of Mexico's flag, and it didn't run in Mexico as scheduled Feb. 8 because the use of Mexican national symbols requires the government's permission.02/25/2010U.S. agents to help Mexico with intelligence on cartels MEXICO CITY – As a wave of killings continues along the Texas-Mexico border, U.S. officials are planning a stepped-up role that will include U.S. intelligence agents working more closely with newly trained Mexican federal units, U.S. and Mexican officials said Wednesday. MEXICO TRAVEL ADVISORY The U.S. government warned its citizens Wednesday against traveling to the Mexican border state of Tamaulipas, where 19 people were killed in shootouts this week. On Tuesday, gunmen attacked the police headquarters in the town of Miguel Alemán. Six officers were missing and presumed kidnapped. In the southern state of Oaxaca, assailants stormed a rural town and killed 13 people in attacks that were believed to be drug-related.Drug lord Osiel Cárdenas Guillen gets 25-year sentence HOUSTON – Behind armed guards and locked doors, one of the most feared drug lords in history was sentenced Wednesday to 25 years in prison.