>Or sometimes they are paying for something they'll never get. I've recently heard of an incredibly large amount of money (hundreds of billions, AFAIR) being poured into social security for the guys with bogus SSNs - which automatically means these guys are also paying for someone's Medicare, paying federal and state taxes, while getting nothing for that (and can't file for tax return either, because their SSN is fake).
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Can you document this? I've "heard" stories are wonderful, but they can't hold a candle to the I've documented ones.