Mulvaney inserted himself into the conversation and tried to negotiate a compromise sum of money, according to the sources in the room. Mulvaney said “that if Dems weren’t OK with $5.7 [billion] and the president wasn’t OK with $1.3 [the Democratic offer] … he was trying to say we should find a middle ground,” one of the sources said, paraphrasing Mulvaney’s remarks.

“Trump cut him off … ‘You just fucked it all up, Mick,'” the source recalled Trump saying. “It was kind of weird.”

Another source who was in the room confirmed the account. That source said their impression was that Trump was irritated at Mulvaney’s negotiating style. “As a negotiator, Trump was resetting,” the source said. “Mick was not reading the room or the president.”