 Trump has supervised building projects, which included 40 Wall Street, Trump International Hotel and Tower, and Trump Park Avenue, In 2006 he helped launch Trump Mortgage, which collapsed less than a year later.In 2010 he became a spokesperson for Cambridge Who's Who, a public relations firm that had received hundreds of complaints filed with the Better Business Bureau.He appeared as a guest adviser and judge on many episodes of his father's reality television show "The Apprentice", from season 5 in 2006 to his father's last season in 2015.