Billionaire activist investor Carl Icahn said on Monday he planned to sell his shuttered Trump Taj Mahal casino in Atlantic City, New Jersey, likely bringing an end to his troubled relationship with the city. Icahn, a special adviser to U.S. President Donald Trump, the original owner of the casino, will sell the Taj Mahal - possibly at a loss - instead of investing the $100 million to $200 million it needs to keep going, according to a statement on his website. Icahn closed the 26-year-old Taj Mahal in October 2016 after failing to reach a new contract with union employees.