When I received the form in the mail, I filled out the portion stating how many people lived in my apartment and sent it in.
Some time after the "deadline" I got a knock on my door from a census worker
She informed me that they had no record of my sending in the form and needed to ask me some questions. I informed her that I was the only person living here and that was all I was going to say. She kept trying to ask questions and said it was required by the Constitution and federal law. I told her I have provided all info needed for the constitutional function of the census and to have a nice day. I also reminded her that congress can not pass laws that violate the constitution and cited the 1st, 4th, and 5th amendments thereof.
She implied that I was required to answer all of the questions and said it would take about 10-15 minutes if I was cooperative. I told her that I would like to know the process by which I would be compensated for my time. She said they did not do that. I informed her that would be a violation of the 13th amendment. (a bit of a stretch, I know but what the hell)
I asked if I was legally required to answer the questions and she implied that I was. I then said something to the effect of " If you, as a government agent are going to continue questioning me, would you please marandize me before proceeding any further.
She gave up on asking about me and my apartment and started to ask about people in other units. I told her I would not be telling her anything about anyone and said she might want to try the apartment manager and gave his apartment number. she said "I tried that already and he will not say anything about anyone"
she was a pretty nice lady and both her and I were pretty respectful toward each other. several times during the conversation I told her it was nothing personal against her and I meant no disrespect but that I must stand by my beliefs.
At one point when I told her I was not comfortable sharing personal info with anyone when not required she told me that all the info was confidential and could not by law be shared with other agencies. I told her that when the federal government rounded up Americans of Japanese decent during World War 2 and placed them in prison camps, they received the info from the census bureau and the law did not stop them then. She seemed unaware of this fact and walked away learning something new.
EDIT: She told me another worker/supervisor would be coming back but no one else did.