Justin Bieber set to meet a 9/11 victim's daughter after a request from Barack Obama

Justin Bieber is set to meet a 9/11 victim's daughter after a request from US President Barack Obama.The 'Baby' hitmaker has implied he will keep a promise made by the American leader that he would arrange a meeting between the 17-year-old pop superstar and 14-year-old Payton Wall.The 17-year-old singer wrote on twitter: "I think you're wrong. Pretty sure President @BarackObama will keep this