Reader Perry Bechky points me to a NAFTA Chapter 11 ruling from a couple days ago, in which the Tribunal rejected an investment claim related to trade restrictions on certain live cattle coming from Canada into the U.S. The basic finding was that the Canadians had no investment in the U.S., so the Tribunal did not have jurisdiction.
(I'm going to leave it to the investment folks around here to say more about the decision, if they want to.)