The US Court of Appeals for the District of Columbia on Wednesday denied President Donald Trump’s petition for a rehearing en banc of his challenge of the House Committee on Oversight and Reform’s subpoena of his tax returns.

Earlier this year, a three-judge panel of the appeals court had upheld a lower court’s ruling that Mazars USA, Trump’s accounting firm, had to comply with the Committee’s subpoena and turn over the President’s tax returns to Congress. The president filed this petition, requesting that the full appeals court rehear the case.

Eight of the 11 judges of the Court of Appeals voted to deny the petition for a rehearing. Judges Katsas, Henderson and Rao dissented. Judge Katsas stated in his dissent that the petition should have been granted because this case involves “exceptionally important questions regarding the separation of powers among Congress, the Executive Branch, and the Judiciary.” Judge Rao argued that the petition should have been granted because “the Committee exceeded its constitutional authority when it issued the subpoena”.

Jay Sekulow, Trump’s attorney, said that Trump will appeal the decision to the US Supreme Court.