Lately, I've been thinking about where things went wrong. Donald Trump is the culmination, not the genesis, of America's nationalistic trend. I suspect that the turn came, ironically, at the moment of the West's greatest triumph, when Gorbachev embraced western values of democracy and capitalism, and the Soviet Union disintegrated.
Exploring the era, I came across this insanely prescient essay from 1992. I've never been a fan of David Gergen, but damn, he nailed this one. The article is firewalled, so I'll share a few of his predictions.
Staggered by an economic downturn that has taken a deeper psychological toll than expected and frustrated by a paralysis in its politics, the United States toward the end of 1991 turned increasingly pessimistic, inward and nationalistic...Insistent cries came along that the nation should embrace a new philosophy of putting America first: turn a hard, flinty eye toward economic competitors, said its advocates, and curtail the long tradition of generous idealism in foreign policy.