(Bloomberg) -- President Donald Trump urged the U.S. Supreme Court to block a House subpoena for eight years of his financial records, saying lawmakers are exceeding their authority by demanding the documents from his accounting firm.

Trump is asking the high court to put the subpoena on hold while he files a formal appeal, something his latest filing said he would be willing to do quickly if asked. The court could act at any time on Trump’s request, first filed a week ago.

The case, which isn’t directly tied to the ongoing House impeachment probe, is one of two that are testing the justices’ willingness to shield the president from investigations into his personal and business affairs. The court already is weighing whether to hear Trump’s appeal in a separate case challenging a New York grand jury subpoena for his tax returns.

The House Oversight and Reform Committee says it wants the financial documents because it’s considering revising the federal ethics-in-government laws. Trump’s lawyers say the primary purpose is law enforcement.

“The committee identifies no reason why it needs these records immediately,“ Trump said in the latest filing.

A federal appeals court in Washington backed the committee on a 2-1 vote. Chief Justice John Roberts previously put that ruling on hold temporarily by issuing an administrative stay.

In the other case, Manhattan District Attorney Cyrus Vance is investigating whether Trump’s business falsified records to disguise hush payments to two women who claimed they had sex with him before he took office. In an appeal filed last week, Trump contended that presidents have broad immunity from criminal investigations while in office.

The congressional case is Trump v. Mazars, 19A545. The New York case is Trump v. Vance, 19-635.

(Adds excerpt from new court filing in fifth paragraph)

To contact the reporter on this story: Greg Stohr in Washington at gstohr@bloomberg.net

To contact the editors responsible for this story: Joe Sobczyk at jsobczyk@bloomberg.net, Laurie Asséo

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