intensifying the showdown between congress and the former president over the events of january 6th. garrett haake has more. the yeas are 229. reporter: tonight nine republicans joining with every democrat to hold steve bannon in contempt of is really about. this is about getting at president trump reporter: referring the former top trump adviser to the department of justice for possible prosecution. the department of justice will do what it always does in such circumstances. we ll apply the facts and the law and make a decision consistent with the principals of prosecution. reporter: bannon refused to engage with the committee investigating the january 6th attack, despite a subpoena in letters, bannon s attorney argued he has been instructed not to provide documents or testimony by mr. trump citing executive privilege. now lawmakers believe bannon has specific knowledge of the planning of the attack. he knew something we want to know that information. reporter: today s vo