Google confirms it’s only blocking Canadian news orgs as defined under the Online News Act and would not, for example, block the New York Times or Fox News.

As @mgeist notes:

“The effects will be devastating for Canadian media, who will disappear. In their place will be foreign outlets and lower-quality outlets that do not qualify as eligible news businesses under the law.”

https://pressprogress.ca/canadian-news-websites-will-soon-be-blocked-in-canada-but-american-news-outlets-will-still-be-available/