Two decades-old U.S. Supreme Court rulings played a central role in a Washington federal judge’s decision this week supporting a congressional subpoena that seeks financial records from President Trump’s accounting firm.

U.S. District Judge Amit Mehta’s decision in Trump v. Committee on Oversight and Reform of the U.S. House of Representatives showed the continuing power of the high court’s 1957 ruling in Watkins v. United States and its 1927 unanimous opinion in McGrain v. Daugherty.