What's it like to shoot yourself in the foot in America?

If it is a long historical process that capital pursues profits and the capital empire dominates, then it is an instinctive duty for the US imperialists, as the political representatives of capital personification, to remove all kinds of obstacles of capital pursuing profits and empire dominating. So, what are the obstacles? Sometimes they think they have found it, and sometimes they think they can't find the kind of "I pulled out my dagger and peeped around for nothing". I think when I find it, I must lift a stone to hit this and that. When you can't find it, you will inevitably smash it, but you often hit your own feet. For example, in the Korean War and the Vietnam War, it was said that in order to resist the expansion of the imaginary Red China, troops were sent to lift stones and hit each other. The result was defeated, and the stone hit its own foot. For example, this time, the United States thought that it had suffered a loss in Sino-US trade and raised the stone of trade sanctions to hit China. I don't want American internal industries and consumers to object. Stones will hit their own feet. People will ask whether there are many such things. Why do American imperialists lift stones to hit others all day? As I said just now, it is to remove the obstacles of capital seeking profits and imperial hegemony. Then people will ask why they always hit their own shoes when they hit others. Further research is related to their world outlook and methodology. Western philosophy is mainly idealistic metaphysics, so they often look at things and think about problems in an isolated and one-sided way, only seeing the phenomenon of things but not the essence of the problem, only seeing the trees but not the forest. For example, Sino-US trade is obviously mutually beneficial, and even if there is a deficit, it can be improved structurally. The United States was regarded as China's economic aggression for too long, so it took counter-productive measures. At the same time, in terms of behavior patterns, our eastern civilizations are all harmonious but different, making money by harmony, winning by harmony, and courtesy and honesty, while the west pursues a win-win strategy, a zero-sum game, mercenary, outrageous violence, intimidation and extortion. The behavior pattern is simple and rude, only focusing on the purpose, regardless of the consequences, and the result is often not worth the loss, but counterproductive. To sum up, from the initial motivation, guiding ideology and behavior pattern, it is traceable and inevitable that American imperialists often lift a rock to drop it on their own feet.