Brownsville, TX
Most neglected "US" territory (formerly mexican territory, but stolen of course) where non-US citizens (mexicans) have a chance at minimum wage jobs for under-the-table-money.
Every morning Pepito walks across the bridge from Matamoros, Mexico to Brownsville, TX to work at a taco restaurant earning $4 an hour. His boss doesn't know anything about him, even if his name is really Pepito. All his boss knows is that Pepito shows up to work and earns his $4 an hour.