The committee also reportedly interviewed former Transportation Secretary Elaine Chao and former Secretary of State Mike Pompeo.
At least 13 former Trump administration officials violated the law by intermingling campaigning with their official government duties, according to a new investigation.
Robert O'Brien and his entourage were relegated to a single floor at their Hanoi hotel, food was left outside their rooms for them to retrieve.
Robert O'Brien is the highest-ranking official in the Trump administration known to have contracted the coronavirus.
Robert O'Brien said he's "so proud” of the way police officers have handled the George Floyd protests "with restraint."
For all the differences between Robert O'Brien and his predecessor, O'Brien ended up signing off on an Iran strike that Bolton long endorsed.
O'Brien, who serves as special presidential envoy for hostage affairs, is set to replace John Bolton.