No, but you have to have the necessary visa that is required to work in the USA. I don't think so.
yes because your an idol in America
San Francisco: 17th July 08 Louisville: 21st July 08 Phoenix: 25th July 08 Salt Lake City: 29th July 08 San Juan: 2nd August 08 Kansas City: 8th August 08 Jacksonville: 13th August 08 East...
No, the minimum age is sixteen, as of the July BEFORE the audition you plan to go to.
Pretty easy. Just stand in line and wait.