Shortly after President Trump unexpectedly withdrew Elon Musk's pick to lead NASA last weekend, one name quickly surfaced as a major force behind the surprise decision: top White House aide Sergio Gor.

Why it matters: Trump acknowledged Thursday that canceling Jared Isaacman's NASA nomination had "upset" Musk, who's close to Isaacman. It was a factor, among many, that led to Thursday's shocking falling out between the president and his one-time "First Buddy," the world's richest person.

Musk spent the afternoon flaming Trump on X. It left presidential advisers stunned — and some of them angry at Gor, whose tense relationship with Musk was a backdrop to the controversy. • Senate Republicans also blamed Gor for helping undermine the NASA nomination to settle a score with Musk, who had be

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