A demonstrator hands out a sign about the 2020 census outside the U.S. Supreme Court in Washington, D.C., in 2019. The Census Bureau is projecting the first set of census numbers won’t be ready until February, Trump administration attorneys told a federal judge on Monday.

A demonstrator hands out an “Every Person Counts” sign outside the U.S. Supreme Court during oral arguments in the Department of Commerce v. New York, 18-966, case in Washington, D.C., U.S., on Tuesday, April 23, 2019. Key Supreme Court justices seemed inclined to let the Trump administration add a question about citizenship to the 2020 census in a clash that will shape the allocation of congressional seats and federal dollars. Photographer: Andrew Harrer/Bloomberg via Getty Images