Lawyers for President Donald Trump are hoping to convince a Washington federal appeals panel that a U.S. House committee subpoena for financial records goes too far, and the opening lines of their newly filed court papers tee up a hypothetical clash between Congress and the U.S. Supreme Court—where the justices’ records, and not the president’s, are the target of a congressional demand.

The justices, of course, just like the president, file annual financial disclosure forms that are available to the public. But that’s not what House Democrats are going after—they hit the president’s longtime accounting firm, Mazars USA, with a subpoena for records created between 2011 and 2018. Mazars has remained mum in the dispute, letting the president’s legal team make its case.