The Supreme Court is siding with the Trump administration to block the questioning of Commerce Secretary Wilbur Ross about his decision to add a citizenship question to the 2020 census.

The unsigned order Monday overrides lower federal courts in New York that would have allowed the questioning of Ross to proceed in lawsuits challenging the addition of a citizenship question on the decennial census for the first time since 1950.

The suits by a dozen states and big cities, among others, say the citizenship question will discourage immigrants from participating, diluting political representation and federal dollars for states that tend to vote Democratic.

But the court is allowing the deposition of acting assistant attorney general John Gore to go forward, over the dissent of Justices Neil Gorsuch and Clarence Thomas.

A trial is scheduled to begin in New York on Nov. 5, although Gorsuch suggested in a four-page opinion that U.S. District Judge Jesse Furman could delay the proceedings. Gorsuch said he "sees no reason to distinguish between Secretary Ross' deposition and those of other senior executive officials."

Furman based his ruling requiring Ross' deposition on concerns about Ross' truthfulness in relating how the decision to add the citizenship question came about. The judge noted that Ross claimed in March, when the decision to add the citizenship question was announced, that he considered adding it after a request to do so last December from the Justice Department.