The top four advertising-industry trade groups are fighting the question on the upcoming 2020 U.S. Census: “Is this person a citizen of the United States?” This, according to the trade groups, “would depress response among both non-citizen and their families… that runs the risk of non-responded buyers by significantly undercounting immigrant, minority, and low-income populations.” The letter sent to Commerce was signed by the CEOs of the American Association of Advertising Agencies, Association of National Advertisers, the American Advertising Federation, and the Advertising Research Foundation.