Then I got a phone call, and they threatened me with criminal charges for not answering the questions. I asked them where was that in the Constitution? That was the end of that nonsense.
Read Article 1, Section 2 of the United States Constitution.
See also: Morales v. Daley, 116 F. Supp. 2d 801, 820 (S.D. Tex. 2000).