Americans for Prosperity Action, the political arm of the Koch network, is preparing to back a single Republican candidate in the 2024 presidential primary, a move that could reshape the GOP field. The memo released by Emily Seidel, the CEO of Americans for Prosperity, does not mention Donald Trump, and the group is not planning to support his White House bid. The Club for Growth is also openly working to oppose Trump’s candidacy, and it remains to be seen which candidate AFP Action will support and how much influence the group will have on the Republican primary race.