I just watched an episode of South Park titled "goobacks" where humans from the future travel back to present day to look for jobs, because the future is so overpopulated and poor. It's a very funny episode because liberals love this show yet the creators obviously think that illegal immigrants are ultimately bad for societies. For those interested in seeing the whole episode, click below. WARNING! Viewer discretion advised, but worth the watch.

http://www.southparkstudios.com/guide/806