It turns out writer rooms for Star Trek are in LA, so Academy is screwed, and SNW season 3 MIGHT be effected.
Many Canadian writers are also members of the WGA, and so you won't find them working on American productions, wherever the writer's room or shooting are located.
The Writer's Guild Canada, while not on strike, is holding ranks with Writer's Guild America. So any fundamentally American production that tries to shift to using Canadian resources is going to have problems.
And, that makes a lot of sense. While a different guild, the WGC doesn't have fundamentally different contracts than the WCA. Canadian authors have been feeling the same impacts as American ones. So, advances by the WCA will help the WGC.