Sure, politcal problems are hard problems. However, your original post asserted that the current energy demand of the US cannot be met without coal. You did not say they will not, because of political pathology.
It is, however, patently obvious that they can - many countries in Europe are doing that right now, and not all of them depend on Russian natural gas.
Further, the only reason why EU states in the east depend on Russian natural gas is because Russia is close. The US is a gas exporter. They would need no such overseas supply.
Versus the reality in which they are the hardest problems that exist for humanity at the current moment.
Russian gas is literally not replaceable by liquid natural gas, or any other energy source, as imports for most of Europe this winter.
It's theoretically fungible on an infinite time frame. We do not live in a theoretical universe.