Questions in the ACS are required by various federal laws for managing and evaluating a wide variety of federal and state government programs. For example, information on income is required for use by the Social Security Act, the National School Lunch Program, the Low Income Energy Assistance Program, and the U.S. Department of Education for grant allocation. Journey-to-work information is used by federal, state, and local transportation planning agencies in designing regional transportation systems. Learn more about why we ask specific questions.