Then you use the profuse records these folks leave in their wake to back through to everyone who profited from or otherwise aided and abetted this Gestapo. Down to the individual agents and “forward deployed” engineers.

(To be clear, I support stricter immigration enforcement. ICE blowing the military budget of Saudi Arabia to deport fewer than Obama did with a tenth of a budget isn’t immigration enforcement, it’s a partisan militia. I don’t use the term Gestapo lightly.)