Andre Barbosa may soon have to pack up and leave the palatial home he has been occupying in Boca Raton, Florida. The 23-year-old Brazilian national has been squatting at the $2.5million waterfront estate on Golden Harbour Drive since the summer, infuriating all the neighbors in the process. Barbosa, originally from the neighboring Pompano Beach, has been threatening to use an obscure real estate law that allows people to claim a property as their own if they stay there for seven years. No one witnessed Barbosa breaking into the 7,522-squae foot, five-bedroom, six-bathroom waterfront home, so he cannot be arrested. But...