We no longer (sic) have the capacity to be the hegemon of the world. Well, we never did have it and that could be one reason we've never tried.
The US's last conquest was the Spanish-American War, and even then, there was no intention of keeping Cuba or the Philippines as colonies. Puerto Rico is likely to become a stae whenever its people decide to.
The entire thesis is foolish and has a touch of fantasy. You are counting things like weather stations on remote unpopulated islands as tho they were occupation forces.
This is the sorriest, most confused excuse for an article that I've ever seen. With this poor a quality of thinking, The Nation risks being cast aside for total irrelevance.