ATLANTIC CITY, N.J. (AP) — The crucial summer season will start with three Atlantic City casinos in bankruptcy and one beset by regular pickets and protests. Revel is struggling to reopen, and the Showboat is mired in a legal battle over whether it can be converted into a college campus. Yet the first thing some customers will see when they arrive in the city are the words "Boycott Taj" and "Boycott Trop" on the facades of casinos, shined there by union members using a light projector. Icahn, the billionaire investor who also owns Atlantic City's Tropicana Casino and Resort, is in the process of acquiring the Taj Mahal through bankruptcy court. Icahn did not respond to requests for comment Wednesday and Thursday, but he has said previously he will close the casino if the union wins a court appeal to get the benefits reinstated. [...] Trump Entertainment Resorts is enforcing a 1988 legal covenant among three casinos in the area stating that the Showboat could never be used as anything other than a casino hotel.