The various Church sponsored campaigns, Anglican, Presbyterian and I believe a third. Though the article doesn't mention it, I suspect one of the legal problems arises from the fact that the Arab world has had a formal boycott which it's illegal for an American to comply with.
Sorry. Most of the time, I support the Zionist side of an argument, but you can't inhibit free speech. The Presbyterian and Anglican church leaderships, while they have proven themselves over and over again including in this instance to be minions of Satan, are well within their rights to withdraw their holdings from corporations whose policies they dislike, and well within their rights to explain to their church members why they are doing so. If this puts them at odds with an anti-boycotting law, then the anti-boycotting law is laughably unconstitutional.