I think the authors point was concerning the productivity stagnation that’s has occurred under Trudeau ,esp since the pandemic… even with a more highly educated workforce… His energy policy seems like icing on the cake..As for the tariffs…
https://www.wsj.com/economy/trade/these-border-cities-thrived-under-trump-1-0-his-policies-now-threaten-to-undo-them-41299fad?st=gojfxs&reflink=desktopwebshare_permalink
US border towns might suffer along with our neighbors