That remains to be proven in my mind. But the American welfare state "guest workers" I'm thinking of are from Mexico and Central America. There ain't no such thing as a free lunch and importing non-citizens to do the jobs and pay the taxes to support welfare state goodies for the few results in the destruction of national sovereignty.
The Mexicans in my neighborhood (who outnumber me 8 to 1) go to work each morning or have a business. Are they on food stamps? I have no idea.