Donald Trump had a long relationship with a reputed New Jersey mobster, who gambled at the real estate billionaire's Atlantic City casino, flew on Trump's helicopter, and partied on his yacht, the gangster's daughter reportedly claims. Trump has denied having a personal relationship with Robert LiButti, who was banned in 1991 from New Jersey casinos for his ties to the late Mafia boss John Gotti, Michael Isikoff, chief investigative correspondent at Yahoo News reports. That same year, Trump's hotel casino in Atlantic City, the Trump Plaza, was fined $200,000 by New Jersey regulators for violating anti-discrimination laws involving complaints linked...