"In recent years, AIPAC has aligned itself too closely with Prime Minister Netanyahu's government," said Massachusetts Democratic Rep. Seth Moulton on Thursday, one day after announcing he was launching a primary challenge against incumbent Dem Senator Edward Markey.

"I'm a friend of Israel, but not of its current government, and AIPAC's mission today is to back that government...I don't support that direction. That's why I've decided to return the donations I've received and will not be accepting their support." 

Moulton will refund $35,000 that he's received from AIPAC. 

AIPAC quickly lashed out at its estranged beneficiary.

 "Moulton is abandoning his friends to grab a headline, capitulating to the extremes rather than standing on conviction," the group wrote on X.

"His statement comes after years of him repeatedly asking for our endorsement and is a clear message to AIPAC members in Massachusetts, and millions of pro-Israel Democrats nationwide, that he rejects their support and will not stand with them."

AIPAC has long been regarded as one of the most powerful lobbying groups in US politics. Historically, politicians from both parties have been eager to accept AIPAC money - and quick to accept AIPAC's voting instructions.  Similarly, they've been fearful of incurring the group's wrath, which could quickly turn into a potent primary challenge. In 2024, AIPAC and allied pro-Israel groups spent enormous sums in successful efforts to oust New York Dem. Rep. Jamaal Bowman and Missouri Dem. Rep. Cori Bush. AIPAC's $15 million spent against Bowman helped make that race the most expensive House primary in US history.  

However, in a political earthquake emanating from Israel's staggering destruction of Gaza with US-supplied weapons, AIPAC now finds its position in American politics wobbling like never before, as citizens across the political spectrum demonstrate growing unease with Israel's influence over politicians and policy.