The Department of Public Safety on Tuesday issued the advisory, citing continued violence throughout Mexico.
The U.S. State Department last month recommended that Americans avoid travel to all or parts of 14 of 31 Mexican states. It's the widest travel advisory issued by the U.S. since Mexico stepped up its drug war in 2006.
DPS Director Steven McCraw says Mexican drug cartel violence and other criminal activity represent a significant safety threat, even in some resort areas.
