The Haskell Free Library in Derby Line and Stanstead Quebec is quirky. Half in Canada and half in the US. https://en.wikipedia.org/wiki/Haskell_Free_Library_and_Opera... Both towns are fascinating as well. Worth a visit in the summer/fall.
In relation to that, some time ago I also stumbled across this photographic documentary of the whole US/Canada border:
The Schengen Area is relatively uniform with regards to government subsidization of healthcare and the availability of guns. The same can't be said of the US and Canada. The incredible amount of regulatory capture in the US makes them unlikely to reconcile those aspects of their society with the rest of the developed world any time soon.
Setting aside your subjective opinion about the state of the US's government, the Schengen area includes countries such as Slovakia and Austria. Apparently there have been no wave of Slovakians migrating into Austria despite the gap between their living standard, political transparency or corruption level. Hungary and Austria for that matter, or Poland and German. The agreement is only about open border. Nothing else…
You clearly fail to understand the statistical differences in health and safety between those countries if you think they’re comparable to the gulf that exists between Canada and the United States.