I don't have time to read up on this right now, but I'm 99% sure it's total BS. Someone may twisting some government ideas out of context.
Interstate commerce and travel is Constitutionally protected. Some aspects may be regulated (ie safety, taxes) but the governemnt can't forbid (or require permission) for either. They might able to more tightly control a specific conveyence (ie air travel) for safety and security reasons but they would have to be EXTREMELY careful or whatever they might try will get thrown out on constitutional grounds.
The constitution does not protect international travel I believe.