you most certainly can work in overseas offices of us firms w/a jd. lots of firms have european offices that do cross-border transactions, international arbitration, help foreign co's access the us capital markets (i.e., us securities lawyers), etc. personally, i summered in london and had an offer to return, but i turned it down. honestly, i think the market is pretty good for us lawyers who want to work in london. i don't think it would be that tough if you really wanted to do it, especially if you went to a top school.