The NSA has backdoors to major platforms or use outright hacks, the US government doesn't ask for permission but once. For broad use backdoors. Google and Facebook rolled over long ago.

I'm Canadian and more informed about how CSE operates, but all 5 eyes have exceptionally broad non targeted surveillance measures. Cooperation with the NSA is so tight that for all intents and purposes, North Americans are paying for close surveillance of everything we do.

The erosion of rights largely happened in both countries right after 9/11 and keeping legal backdorless encryption is definitely going to be a difficult fight for us to win after the next "event".