RISK - Under Secretary of Defense for Acquisition and ...

When you get a job, fill out the I–9 form. Check off “Citizen of the United States” and I know folks who have also checked off “non-citizen national” with no consequence. You can use your social security number here if you wish, but the form itself says it is voluntary. And they may old out SS but not taxes. But you do not have to. ................
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