The damage to the US’s global influence and stature. Whether that’s morally a good or bad thing is a separate question. There is no question the US has screwed over a lot of countries. But be aware that the Chinese will step into the void as they already have in Africa. And those countries may find themselves out of the frying pan and into the fire. As bad as the USA is (and it’s pretty bad) it’s still better than China (though at the rate it’s digressing this may not be true for much longer).