Here's an audio Interview by the Globe and Mail(Canada's NYT) regarding Water Rights treaty discussion between the US/Canada. Part of it discusses Trump's Canada "Tap"(Columbia River). In itself it is interesting/informative about that, including some history of cooperation. Worth a listen, has a PBS/Informative quality of coverage.
Something troubling in it is a description of a change in attitude between Canadian/US Scientists. Allegedly US Scientists are being told not to discuss or meet at conferences with their Canadian counterparts like they used to do routinely before. A glimpse behind the scenes.