The former president had previously instructed Bannon and other associates not to cooperate with the panel, claiming that executive privilege – a president’s power to withhold certain internal executive branch information –compelled them to stay silent. But in recent days, as several witnesses have come forward to offer the House panel damning testimony about his conduct, Trump has grown frustrated that one of his fiercest defenders has not yet appeared before the committee, people close to him said.

Source: Steve Bannon, facing jail, agrees to testify to Jan 6 committee