I am pretty sure I read an ALPA email that said TSA has now approved the international off-line jumpseat for all CASS carriers.

I have not yet tried it. But it seems like it's a done deal. (Not sure how TSA's approval relates to individual airline policies).

To call FedEx jumpseat coordination (even though they might also not be aware of the change yet...) dial 1-866-357-5711

Or, contact your Jumpseat Committee.

Good luck.