Johnny Sutton isn't taking orders from Mexico. If anything he's taking orders from Washington DC, from Alberto Gonzales and GW. But most likely Sutton has some kind of weirdo agenda of prosecuting any LEO who is tough on illegal aliens
Sutton apparently has a history of going after LEOs. I forget where I heard it, but somebody is in touch with other Border Patrol agents he's gone after, and they're putting together a story about it.