Official travel warnings normally run along the lines of don't go sailing off of Somalia or don't pack your bikini for that trip to Saudi Arabia ... now we have this:
The Mexican government warned its citizens Tuesday to use extreme caution if visiting Arizona because of a tough new law that requires all immigrants and visitors to carry U.S.-issued documents or risk arrest.
Correct me if I'm wrong, but I believe that this is the first time a foreign government has warned its citizens against visiting a state in our country.