They illegally pay taxes yes. A very vague percentage that under logical sense is next to impossible to determine. What if they are caught working illegally under a fraudulent number? What happens than and who pays? Out of that small percentage that do pay tax, how many are caught and charged? You seem to point the finger but offer no citations yourself. Yes I posted the wrong citation but now have corrected it. Like I said, it's hard to supply proof on either end because they are undocumented. Which means you have zero accurate stats on them. If they use illegally someone's else's employment number. That is fraud. Unless you believe it's okay to commit fraud in order for the state to collect tax. Those are your values you must look into to determine if that is right. At the end of the day, accurate facts must be collected. The only way I believe you can, is to stop illegal immigration, and see the economical effect. As of now, most stats vary in almost 25 to 50 %. I would like to see accurate stats that support that letting in anyone and everybody is of benefit to the economics of a country. Does any other country allow this? If so, please supply some citations to accurate facts that support it. Or your words that you have just said are meaningless.