https://www.bbc.co.uk/news/live/c724wqpy4qntGeorgia's Marjorie Taylor Green has repeatedly pressed Cheatle for names of those involved in securing the Butler really, arguing that the American people "demand answers".
Cheatle has, again, refused.
"I don't believe you," an angry Greene says of Cheatle's answers to lawmakers.
"You're not doing well. You've been sitting here for three hours. The entire country is demanding you resign."
When Greene asks Cheatle if she has a timeline from the rally shooting, Cheatle says she has one "that does not have specifics".
Laughter could be heard in the room, and Greene responds: "That's shocking."
Shouting, Greene repeatedly asked "at what point" someone is declared a threat - whether it takes a backpack, a range finder, or being seen crawling on the roof of a building.
"People under your command did not consider him to be a threat. But people there in the crowd considered him to be threat," she said. "You are a complete failure."
She ended her remarks by asking whether there was a conspiracy to kill Trump - which Cheatle denied.
"We're waiting on your letter of resignation," Greene says. "You really need to consider doing that today."
