The open rupture between US President Donald Trump and key MAGA figure Congresswoman Marjorie Taylor Greene is more than a dramatic falling-out between two high-profile personalities. It is a revealing moment for a political movement built on loyalty, spectacle, and grievance – and one that rarely tolerates internal dissent. When the President brands one of his most committed defenders “wacky” and a “traitor,” and she in turn accuses him of trying to suppress a push for transparency, it exposes a deeper instability at the heart of populist politics in America. What makes this feud so striking is its context.

Ms Greene has been one of Mr Trump’s most ardent loyalists, standing by him through the tumult of the 2021 Capitol riot aftermath, amplifying his attacks on opponents, and voting reliably with his agenda. For such a figure to now be on the receiving end of presidential........

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