The Trump administration asked the Supreme Court on Monday to delay a trial over adding a controversial citizenship question to the 2020 Census.

The request comes a week before the trial is scheduled to start and a week after the high court temporarily blocked pretrial questioning of Commerce Secretary Wilbur Ross in the case.

On Friday, two lower courts ruled that the trial should proceed as scheduled. But the government is arguing that it should be postponed until the Supreme Court resolves the question of Ross’s deposition.

The lawsuit, one of several challenging the question, claims Ross’s decision to add the question was politically motivated. The decennial census helps determine the allocation of $800 billion in funding each year, and affects congressional representation and electoral votes.