It’s easy to understand if you realize that America is essentially a corporation rather than a country, and that country is only representing its shareholders.
In case you’re confused - if you’re not rich and powerful, you’re not a shareholder. You’re an employee or a commodity or an expense, and you exist to enrich the shareholder class.
That’s why the Open Market Committee is the most important organ of US government. It adjusts the rules to maximise shareholder value. It’s great if you are a billionaire.