Some illegals with phoney social security numbers have money taken out of their checks, and that money is deposited into an account. Probably more illegals with phoney social security have money taken out of their checks that stays with the crooked employers who hired them in the first place, but more illegals than that work under the table for cash, or are employed on farms and ranches and paid piece-work, so nothing is withheld, and nothing is paid into social security at all.