If there is suspicion absolutely but not in my house.
I will gladly prove I am a US citizen also and nothing to hide.
I would say to target the minority groups for this, hispanics, blacks, asians, and muslims.
Or known meth areas in very poor white area and crack down on biker gangs.
Furthermore ban all street gangs. If a kid has his pants sagging and dressed like an MTV ghetto thug arrest him on sight and search.
If a person looks illegal arrest him if they do not speak english.
The gestapo should also do more investigating in illegal alien run markets and establishments.
including construction, factories, and food services hiring illegals.