Senior U.S. District Judge Victor Marrero of the Southern District of New York on Thursday pressed attorneys for President Donald Trump to demonstrate whether they have new information about the potential flaws in a Manhattan grand jury subpoena for the president’s tax records.

Trump’s lawsuit against his accounting firm and Manhattan District Attorney Cyrus Vance Jr. returned to Marrero’s courtroom this month after the U.S. Supreme Court found, in a 7-2 ruling, that the president was not immune from investigation in state court.