From @cira, “As CUSMA review talks loom, Canada should keep Canadian internet traffic in Canada”:

https://www.cira.ca/en/resources/news/state-of-internet/e-mail-pass-us-before-returning/

As CUSMA review talks loom, Canada should keep Canadian internet traffic in Canada – CIRA

Domestic” internet traffic can detour through the United States before returning home. That matters far more now in the current context of trade friction and geopolitical competition.

CIRA