Short story set in Oxford Mississippi a few decades hence, in a world struggling to deal with the devastation caused by climate change. Unsurprisingly, Canadians are the heroes, and Americans have largely devolved into gun-toting red-hat-wearing xenophobic rubes who perpetuate bad choices making their lives even more hopeless.
He's not wrong, but the treatment is quite heavy-handed which diminished the impact. Reducing one's opponents to caricatures is an easy way to make a point, but usually not the most effective way to change their minds. Which means he's just preaching to the choir, which doesn't need this cautionary tale to be convinced that climate change is bad or that voting for Qanon supporters is not a good idea.
Still, looking forward to reading the forthcoming novel set in this same world, in which the themes presumably are fleshed out a bit more.