Steve Bannon, a former adviser to Donald Trump, will appear in federal appeals court on Thursday to challenge his four-month prison sentence for refusing to comply with a subpoena from the Jan. 6 committee. He was found guilty of two counts of criminal contempt of Congress in July 2022 and his lawyers will argue unresolved constitutional questions. The appeals court will decide whether or not the conviction should stand, determining whether or not Bannon will serve his prison sentence.