What ID should one show when travelling/buying air tickets in the US? What if the ID is an expired driver’s licence, will that person be able to travel domestically or not? What IDs can be used?

I have a friend who is out on bail and possibly going to receive probation in the near future. His bond states he can not leave the state but he insists on doing so. He is planning to travel by either air, train,or bus. When buying his tickets and providing and identification is there any way that [...]

My friend is trying to go back to the states with me. The problem is, he has nothing but a travel document. Is there anything he can do?