According to How Stuff Works, there are certain consequences should someone choose not to respond or answer incorrectly to the Census:
If you refuse to give out the information or you deliberately give inaccurate information, you can be in legal trouble. According to United States Code, Title 13 (Census), Chapter 7 (Offenses and Penalties), SubChapter II, if you're over 18 and refuse to answer all or part of the Census, you can be fined up to $100. If you give false answers, you're subject to a fine of up to $500. If you offer suggestions or information with the "intent to cause inaccurate enumeration of population," you are subject to a fine of up to $1,000, up to a year in prison, or both.I had read on different websites that the amount had been raised upwards to $5,000, but I am unsure of this and am too lazy to look further into this but, since the right fears the Census and simultaneously calls for fiscal responsibility, then these laws should be enforced, making those who do not fill out the Census or provide incorrect data contribute to the government in the form of fines, hence the very people who are against performing their Constitutional duty will fund the program, making it a fiscally responsible program. Thanks, Glenn Beck.