To date, no person has been prosecuted for refusing to answer the ACS. Former Director of the Census Bureau Kenneth Prewitt remarked that the Department of Commerce is "not an enforcement agency" and that "the Department of Justice would have to do the prosecution, and we don't recommend that." The Census Bureau prefers to gain cooperation by convincing respondents of the importance of participation, while acknowledging that the mandate improves response rates (and thus accuracy) and lowers the annual cost of survey administration by more than $90 million.