Commerce Secretary Wilbur Ross will have to give testimony about adding a citizenship question to the 2020 census.
Secretary Ross has argued adding the question would strengthen a provision in the Voting Rights Act that's supposed to prevent racial discrimination.
That's why plaintiffs in the lawsuit say the administration has acted in bad faith by adding the question, an allegation Judge Furman has said the evidence supports. The plaintiffs argue the question would intimidate census participants and lead to an undercount of the noncitizen population. That could in turn affect how many representatives states are apportioned in Congress.
Justice Department lawyers have already said they will appeal the judge's decision.