[Marine Inspector]

Comments?

IMO, it's very very unlikely.

Mexico is very protective of it's National Sovereignty and having foreign troops running drugs and illegals or anything would not sit well with them.

Outside of a few obscure websites and rumors, I've never heard or seen any real substantial evidence of this.

[Poohbah]

It's also rather silly to imagine that you can hide an entire army down in Mexico without anybody noticing.

Armies have very specific behavior patterns, and those patterns are very easy to observe.