Is it true that you cannot jumpseat internationally as an OAL pilot on Expressjet anymore? Despite having done it numerous times in the past, I was told today in IAH that "You can't do that". After taking it to several "redcoats" the operations people even printed me some sort of document that says OAL pilots can't jumpseat internationally. (THey even claimed mainline CO cannot jumpseat internationally on xjt)

Is this just a thing with the IAH station or a policy change for the entire airline?