Executive Order 13880: Collecting Information About Citizenship Status in Connection with the Decennial Census [open pdf - 299KB]
From the Document: "In 'Department of Commerce v. New York,' No. 18- 966 (June 27, 2019), the Supreme Court held that the Department of Commerce (Department) may, as a general matter, lawfully include a question inquiring about citizenship status on the decennial census and, more specifically, declined to hold that the Secretary of Commerce's decision to include such a question on the 2020 decennial census was 'substantively invalid.' That ruling was not surprising, given that every decennial census from 1820 to 2000 (with the single exception of 1840) asked at least some respondents about their citizenship status or place of birth. In addition, the Census Bureau has inquired since 2005 about citizenship on the American Community Survey--a separate questionnaire sent annually to about 2.5 percent of households."
EO 13880; Executive Order 13880
Federal Register: http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR
Federal Register (July 16, 2019), v.84, no.136, p.33821