By law, the Census Bureau cannot share your answers with the
IRS, FBI, Welfare, Immigration-or any other government
agency. No court of law, not even the President of the United
States, can find out your answers. And the same law that keeps
your answers out of the hands of these agencies, prevents the
Census Bureau from selling or giving away your address to
people who want to send you mail.
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1980: Armed with a search warrant authorizing them to seize census
documents, four FBI agents enter the Census Bureau's Colorado Springs
office. No confidential information is ever released because a census worker
holds off the agents until her superiors resolve the issue with the FBI.