Auto Insurance Id Card

plane requirements to travel from state to state?
is it possible for my friend to travel to another state? his not a us citizen but he has one of the following requirements. Will they try to ask more ?. oh and his 17 years of age. Does he need to show his birth certificate to prove his 17?or its going to be printed out on the plane ticket?. help please.
i got this source in
http://www.continental.com/web/en-US/content/travel/airport/id/default.aspx
Children under the age of 18 traveling with an adult are not required to show ID at time of check-in.
Children ages 15-17 traveling alone need one of the following:
Driver’s License
Passport
Credit card
School ID
Company ID
Library card
Birth Certificate
Social Security card
Organization ID (such as athletic club, etc.)
Proof of auto insurance in passenger’s name
well… his passport expired… so.. he dont know what to do..
State to state is fine. Your friend should have a passport though if he is her from another country. He will need that when he goes through security.
