Again, it would be stupid and a disaster to invade Mexico.
Best to put our troops on the border and special forces to take out cartel leaders.
Do you know about the Sleeper Cells being set up in the continental US?
I wouldn't doubt that there are sleeper cells, but they would be flea bites compared to the armed forces of the United States. The Mexican Air Forces - if they resisted - would cease to exist in the first 48 hours.
I am sure that the average Mexican would far prefer to be under American leadership after the corrupt nightmare that has always been the Mexican political system.