The only reason it doesn't have to register as an agent of foreign government, is the people who decide that take AIPAC money.
AIPAC doesn't care about anything except the support of Israel, they'll fund whoever supports them most.
With such a large amount of money to burn, “most” candidates won’t be able to withstand the negative campaigning, meaning AIPAC “can be quite successful in wiping them out,” former Rep. Andy Levin (D-Mich.) told Politico. Levin would know. AIPAC targeted him during a 2022 primary because he, a self-proclaimed Zionist and former president of his synagogue, had vocally defended Palestinians. He lost the primary as a result.
Even if you call yourself a Zionist, you can't deviate from the script