AIPAC helped knock him out of Congress. Now, he says, they’re losing.

Michigan Democratic Rep. Andy Levin holds a campaign rally on July 29, 2022 in Pontiac, Michigan. He lost his primary that year to Haley Stevens, who is now embroiled in a fierce Senate primary. | Bill Pugliano/Getty Images One of the most powerful forces in American politics is about to face a major test of its influence — and it may well come up short. The American Israel Public Affairs Committee, or AIPAC, has for decades spent heavily to ensure that US policy remains strongly supportive…