This is because it's not an EU/Canada/US thing as much as some would like to make it. It's a "losing that one election" thing. "What about the Children" always sells. What the EU/Canada have is that the US got hit with this wave first so they can see the results. That's a data point the American Voter only had in theory, not in example form. The recent uptick of nationalism has people thinking there's some essentialism between states and there really isn't - anyone who's travelled in more places than the city knows it.