A right wing think tank fellow - Here a quote from an article and a link.
Jesus Fck try to be honest.
The ACLU said the new evidence reveals that the idea originated with Thomas Hofeller, a Republican redistricting specialist, who wrote in letters and memos that the question would create an electoral advantage for "Republicans and Non-Hispanic Whites." He helped ghostwrite a draft of the Justice Department letter, which adopted his rationale and some of the actual wording, the ACLU said."
They have the documents.
https://www.nbcnews.com/politics/supreme-court/trump-administration-misled-courts-about-origin-plans-add-citizenship-question-n1012096