One of the more revealing things that I've seen in the media from the present American president was the disparaging of the notion that the country is an experiment, a test of a certain social proposition. This is disconcerting, because I've never encountered a historical narrative that didn't hold this to be true. For a very long time, the word was governed a certain way, and then another way of thought started to take hold in the northern European island nations. The colonization of (at least the top half of) the hemisphere was based on this new social order, and if it falls apart after a relatively short run of three or four centuries, we'd lose a lot.
If you're being tested, and you don't know that it's you being tested, if you prevail, it won't necessarily be you who prevails. In the same way, we should be clear that a very specific idea of governance and social order is being tested to see if it is a true way for human beings, and it's being tested in the historical context of other ways of going about things. If things go badly wrong, the conclusion might be drawn that a democratic republic can't be trusted with the mechanisms involved in governing an entire continent.
It is possible to err. In the context of a general prosperity, it's easy to forget that.
(Apolitical -- I have no opinion as to which of the present factions would be most, or least likely to provoke the error. Just pointing out to the baseball players that they are, in fact, playing baseball.)