[ConservativeMind]

Those who decline to answer these questions may receive follow-up phone calls and/or visits to their homes from Census Bureau personnel, and are threatened with prosecution and fines. No person has ever been charged with a crime for refusing to answer the ACS survey, which several US Representatives have challenged as unauthorized by the census act and violative of the Right to Financial Privacy Act.

http://en.wikipedia.org/wiki/American_Community_Survey

[Munz]

thanks for the link, i may need this ;-)