It really is insane. Just imagine a different PAC whose sole purpose is to advocate for any other foreign nation - and not just the obvious "baddies" like Russia, China, etc. - spending millions of dollars to oppose the election of congress members who don't follow their agenda, and then openly bragging about it on social media. People would lose their goddamn minds, and rightfully so.
Yes, but those figures are very broad and primarily involve activities related to public relations, tourism and trade agreements. AIPAC is different.
Not only does AIPAC directly involve itself in US elections, it is not registered under the Foreign Agents Registration Act, which puts tighter scrutiny on where the money comes from and how it is spent.