I am worried for the United States because it is losing sight of the principles that have worked so well for most Americans and that have bound Americans together. I don't believe that it can be taken for granted that the United States won't decline the way many other great countries have declined. I believe that to succeed, Americans need to reflect deeply on what works and look at the KPIs objectively.

While we can objectively measure what each country is doing well and doing poorly, with or without looking at these measures, few people would disagree that the American public education system is broken, the public healthcare system is broken, and the government, which is responsible for managing these things, is broken. At the same time, it is equally obvious that the capitalist private market money/economic system has led to investments and creativity that have created great productivity-improving innovations that have led to big increases in wealth and power, particularly for the top 10 percent of the population who can afford to bypass the troubled public education system, the public healthcare system, and other government administered systems while those in the bottom 60% are by and large falling behind in the quality of their education, their healthcare, and their housing because of relatively low gains in their productivity, their real incomes, and their real wealth, so they are not happy with how things are going for them. Isn't it obvious that, as a result, there are irreconcilable differences between those who are doing well and those who aren't, and their willingness to compromise is falling while their willingness to fight the other side is increasing? So, while the system as a whole is productive and the aggregate numbers look pretty good, the disparities are dangerously large and causing an emerging great conflict.

I don't see solutions being brought forward by the increasingly extreme sides. It’s hard to believe that having the already ineffective government run by idealistic, impractical leftists who haven't built, run, or made anything productive (look at their individual and collective track records) will work well. At the same time, it's also hard to believe in the success of a government run by private market capitalists who have shown little inclination to provide the previously mentioned necessities to the majority so that they can be productive, prosperous members of the system who support it.
If we could agree on these seemingly obvious truths, we could at least agree that it certainly can't be the no track record hard left that is now trying to take over the Democratic Party that will lead the United States to a successful future, just as it is hard to believe that a government led by the self-interested, hard-right capitalists who have no experience, understanding, or track-records of helping those who are failing will lead to success.

It also seems to me obvious that a big fight between these two sides, especially if it leads to the abandonment of or fighting over the rules and governance system (for example, not accepting election results or trying to politically "assassinate the king" by impeaching and charging President Trump with corruption) will increase the conflict. I would assume that most people on both sides can agree that there is an uncomfortably high probability of that happening.