International megastars (and handsome devils) One Direction returned to The X Factor USA! Watch as they light up the stage with their performance of "Midnight Memories!" br br Subscribe now for more THE X FACTOR USA clips: br br Tune in to THE X FACTOR USA Wednesday & Thursday 87c on Fox! br br Like THE X FACTOR on Facebook: br Follow THE X FACTOR on Twitter: br Add THE X FACTOR on Pinterest: br Add THE X FACTOR on Google+: br See more of THE X FACTOR on our official site: br br Like FOX on Facebook: br Follow FOX on Twitter: br Add FOX on Google+: