A federal judge struck down a controversial question about US citizenship that the Trump administration added to the 2020 census, ruling that “adding a citizenship question to the census will result in a significant reduction in self-response rates among noncitizen and Hispanic households.” New York and 16 other states, along with the ACLU and immigrant rights groups, challenged the question, saying it would depress response rates from immigrants, imperil the accuracy of the census, and shift political power to areas with fewer immigrants.