I just recently saw a movie with a pretty funny concept called A Day Without A Mexican. It has decent production values, and what it does is try to provoke the argument that the Latino influx in California has had far more benefits for everyone than what the anti-immigrant forces would have you believe.
The concept is basically that one day a fog surrounds California, and all people of Latin American descent (and not just Mexicans!) disappear one day ... and what all the Anglo-Californians (like myself) have to go through without them.
Funny in a couple of parts, but it gets overly preachy, states a lot of the already-too-obvious (at least to me), and has long stretches of boredom. Definitely not recommended ... unless you take great personal interest in parodies about anti-immigration forces in America.