Controversial White House adviser Sebastian Gorka has left his post, The Daily Beast has confirmed, conservative website The Federalist reported late Friday afternoon. Gorka said that he resigned, a move that has been rumored for months.

It comes amid a larger staff shakeup in the West Wing. In a letter obtained by The Federalist, Gorka made clear that he was less than thrilled with the staff turnover, presumably the departure of senior adviser Steve Bannon, for whom Gorka had worked at Breitbart. “[G]iven recent events, it is clear to me that forces that do not support the MAGA promise are – for now – ascendant within the White House,” Gorka wrote. “As a result, the best and most effective way I can support you, Mr. President, is from outside the People’s House.”