Republican lawmaker Marjorie Taylor Greene, an influential figure among the far right and longtime ally of Donald Trump who recently had a dramatic falling out with the United States president, has said she is quitting her seat in Congress.

Previously an icon of Trump’s Make America Great Again (MAGA) movement, Greene had a very public falling out with Trump, with the president announcing earlier this month that he was withdrawing all support for the congresswoman he described as “‘Wacky’ Marjorie”.

Greene has cited as a cause for her rift with Trump her outspoken advocacy for releasing the government’s files on convicted sex offender Jeffrey Epstein. Trump had dismissed the Epstein issue as a “Democrat hoax” and has struggled with uproar in his MAGA base over his U-turn on a pre-election promise to release government files on the case.