EXCLUSIVE — White House trade adviser Peter Navarro asked the Supreme Court on Tuesday to review his conviction for contempt of Congress in a challenge that holds the potential to strengthen the defenses available to Trump administration officials facing subpoenas if Democrats retake the House in November.

America First Legal and Holtzman Vogel filed a joint petition on Navarro’s behalf, asking the nine justices to require prosecutors to prove that a witness knew defying a congressional subpoena was unlawful. According to a copy first obtained by the Washington Examiner, lawyers argued that he should have been allowed to present evidence that he believed executive privilege prevented him from cooperating with the House Jan. 6 committee, even if that belief was mistaken.