American invasion of Mexico

In 2051, the United States Armed Forces invaded Mexico.

Prelude
As Mexico had severe pressure from the US, political troubles, pollution spreading like wildfire and drifting to the US, and many economic groups destabilizing Mexico, the US saw this a threat to them and mildly to the World, so they invaded Mexico to make sure the oil refineries kept running, and to ensure that oil, fuel, and supplies made it across the Northern US-Mexican border. The United States tried to launch an occupation/annexation operation, but the decision of such a subject is unknown, and the outcome of the invasion is unknown.

Appearances
The United States invasion of Mexico is mentioned in the Fallout Bible.