As Americans we don't see Mexican's playing often at the college or NFL level, however, they are excellent fans and embrace the machismo culture that football brings and can be seen playing at the high school levels.
Arizona will be playing a game in Mexico City next year. The stadium is Estadio Azteca holds about 87,000 people and is always full for games. This is a stark contrast for the regular home games in Arizona.
The Bidwell family who owns the Cardinals were never taken very seriously in NFL circles, but there is a chance for them to pick up legion of fans and make some extra money. All they have to do is play one home game in Mexico a year.