He specifically mentioned her recent defense of Air National Guardsman Jack Teixeira, who was arrested and charged for leaking sensitive and classified military documents, including information about national security issues.
"...therefore, I believe she should not be involved in any type of sensitive, classified information. And she does have some clearances because of her role within the Congress and position on the committee,” added Brennon.
He also pointed out that Greene could maintain her views that the US should not help Ukraine, but should also condemn the leak that has harmed American interests.
Greene's tweets on Thursday where she defended Teixeira by suggesting that he was an enemy to the Biden administration because he is white, male, Christian, and anti-war drew the attention of other politicians.
Former Rep. Liz Cheney (R-Wyo.) criticized Greene, saying that she "cannot be trusted with America's national security information". Rep. Eric Swalwell (D-Calif.) also slammed Greene, calling Teixeira "one of the biggest traitors America has ever seen".