The Tuesday evening vote sends the contempt resolution to the full House, which is expected to vote on the measure Thursday. House approval would send the matter to the Justice Department, which would then decide whether to pursue criminal charges against Bannon.
The lawsuit from Trump is an attempt to block the work of the House committee as it attempts to investigate his actions before and during the siege of the Capitol. The court action also marks his latest effort in a long and thorny several years of fighting requests from the Democratic-controlled US House.
News of the letter, which was addressed to Bannon's attorney, comes as the committee is scheduled to meet Tuesday and vote on whether the Trump ally should be referred to the Justice Department for criminal contempt charges after refusing to comply with the panel's subpoena deadline last week.