Yes. After 5 calendar years...

回答: Since you are here on Y97,stp2004-02-25 08:16:47

being a non-resident alien, you have to become a resident alien, then you have to pay SS and medicare tax.

There is a said when you decide to leave US permenantly in
the future, you may claim back all of them that you paid
all these years. But I don't know how.

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