Illegals, however, can continue to work under fake names and SS #s.0
Years ago when I worked on a farm we would get migrant workers on the farm to pick crops. We were required to record their green card and ss numbers. We did so and paid the required employers % of taxes. In Dec we would send out the required forms 10-40 forms to the addresses they gave us. When I say over 40% came back to us as undeliverable it is probable low. Meanwhile the farm did not get back their money and the money we sent in for the workers to the government stayed in a special fund. The government has been making a huge slush fund for years.