Justin Bieber, will.i.am, Marc Anthony, & Nick Jonas Mentor on THE X FACTOR - THE X FACTOR USA

The final cuts of Boot Camp are upon us and soon 60 acts will be carefully cut to the 24 who will head to the Judges' Homes. The judges find out which category they get and L.A. Reid does not look pleased! Meanwhile, our guest mentors Justin Bieber, will.i.am, Marc Anthony, and Nick Jonas hit the scene. Tune in WEDNESDAY and THURSDAY at 8/7c on FOX.