ALL YOUR RESPONSES ARE CONFIDENTIAL AND PROTECTED BY FEDERAL LAW: No matter what questions are asked, all of your census responses are completely confidential! They may not be used in any way by law enforcement or to determine eligibility for benefits. Department of Commerce staff may only use collected information to produce statistics, and they are prohibited from disclosing any information that could identify you or your household.
(CPAR), Center for Public Affairs Research, "Why the 2020 Census will not ask about Citizenship?" (2019). Publications since 2000. 516.