http://www.sciencemag.org/news/2019/07/killing-citizenship-question-trump-adopts-census-bureau-s-preferred-solution-thorny

President Donald Trump’s decision this afternoon to abandon plans to add a citizenship question to the 2020 census and instead rely on existing government records to generate citizenship statistics matches the Census Bureau’s preferred option for dealing with the politically explosive issue. It’s also a win for those who have wanted to keep such a charged question off the decennial headcount.

“This is Option C,” says former Census Director John Thompson, referring to a March 2018 memo in which Commerce Secretary Wilbur Ross spelled out several options for developing a citizenship tally, and gave his rationale for deciding to include the question on the count that will begin on 1 April. Option C “is what the Census Bureau proposed to Secretary Ross,” adds Thompson, who stepped down in June 2017, a few months after Ross began his clandestine efforts to get the Department of Justice to request the question. Ross eventually chose what he called Option D, a combination of using information already in government agency files, known as administrative records, along with a yes/no question about citizenship on the census questionnaire sent to U.S. households.