Silly question.
We are the wealthiest, most powerful nation on the planet and the central to the economy of every major nation on the planet. Most nations simply do not have the option of dealing with us, the negative results of doing so are simply not acceptable.
The world is changing. With modern technology, countries are modernizing all over the world. The United States is being left behind. You have a political party here of anti intellectuals that have convinced nearly half the country that the best colleges in the world are bad for America. And now with their moronic anti immigrant policies, kids will come here and learn and then leave. Eventually, the best colleges will become second rate and the new best colleges will be overseas in other countries.
Republicans with their fear of the future, their racism, their anti intellectualism, and their willingness to follow a cult leader will only damage this country will suffer the most. We see it now in the states they control. 150 years of conservative policies have created enormous damage in Alabama, Mississippi and other deeply Red states. They are bastions of ignorance, poverty and racism. Look at Appalachia. What a disaster zone. And Republicans on the USMB try to deflect by bringing up a few square blocks in Chicago or some other Blue State big city totally ignoring the 13 states included in Appalachia.