WASHINGTON — A top White House aide is taking the blame for helping trigger President Trump’s fiery clash with Elon Musk — after speaking for months about giving the billionaire “payback” and even gloating to colleagues when Tesla’s stock price dropped, The Post has learned.

Sergio Gor, Trump’s director of presidential personnel, was instrumental in the president’s decision late Saturday to yank the nomination of Musk’s personal friend Jared Isaacman to be NASA administrator , turning a contained disagreement on legislation into a firestorm of insults, four sources inside or close to the White House tell The Post. 5

Isaacman’s donations to Democrats — including $100,000 in 2021 to a PAC linked to Senate Minority Leader Chuck Schumer (D-NY) — would disqualify most nominees under

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