I'm responsible for network administration and security in an European company which has begun to open offices in USA. All our european sites are connected through a IPSec VPN. We use 3DES and AES256. As far as I know there are some limitations in the use of algorithms and key lengths in the USA but I don't know where should I check that so I'm not going directly to Guantanamo when I build the network there

Any help on where could I find that information?

Thank you!!!