South Park: Season 8, Episode 7 - ProjectFreeTV

8 - 7: Goobacks

Immigrants from the future time-travel to the present looking for work. When the boys lose their snow shoveling operation, and hundreds of other people begin losing their jobs due to these “Goobacks," they look for ways to stop the influx of immigrants. The redneck men of South Park discover an especially creative solution to the problem.