"...the number of illegals paying federal... I would guess that the majority contribute since nearly all are on payrolls of some kind. The few not declaring probably would be mostly domestic help."

             Actually, Q, almost all of the jobs in agriculture can be execmpted from payroll taxes as well, and are. In addition to that, those small contractors picking up illegals in front of Home Depot every day do not pay any taxes either. In fact, I would bet that fewer than 20% of the illegals working in America pay any kind of payroll or income taxes.
             That's one of the things that makes them so cheap to the crooks who hire them.