This March 31, 2013 file photo, Justin Bieber performs on stage during the "I Believe Tour " in Berlin, Germany. U.S. border agents say they
This March 31, 2013 file photo, Justin Bieber performs on stage during the "I Believe Tour " in Berlin, Germany. U.S. border agents say they found marijuana on a bus with singer Justin Bieber's tour as it crossed into Detroit from Windsor, Canada. U.S. Customs and Border Protection spokesman Ken Hammond confirms the bus was stopped Sunday, July 28, 2013 as it attempted to enter the U.S. on the Ambassador Bridge. The singer was not on the bus at the time and performed later that night at Joe Louis Arena. (AP Photo/Gero Breloer, file)