https://en.wikipedia.org/wiki/Totten_v._United_States
>Totten v. United States, 92 U.S. 105 (1876), is a United States Supreme Court case in which the court ruled on judicial jurisdiction in espionage cases.
IIRC the export permit for uranium to Canada was for recycling.
https://cna.ca/news/canadian-technology-to-play-a-key-role-in-recycling-of-nuclear-fuel/