I'm probably going down a conspiracy theory, but it's notable when all the Five Eyes countries seem to start talking about the same problem and pushing through legislation. The US would probably do the same if not for the constitution.
I think there's some sort of 'social pressure' between nations. Policies during the COVID-19 era come to mind.
Not sure how closely you follow US news, but a majority of Americans feel that the current US administration is not all that concerned with the constitution, so that not really a blocker.