>The federal reserve has no constitutional right to exist or be independent.
Irrelevant.
Actions have consequences, and the natural consequence of the actions of the US administration is that corporations and states that value stability are looking elsewhere than the US Dollar.
Whether or not the Fed has a constitutional right to independence is irrelevant to this situation. If Americans want to cheer while Trump flushes nearly a century of soft power down the toilet that's their prerogative, but the trend of de-dollarization has already begun and it's unlikely to be reversed.