The president’s attacks on the independence of the Federal Reserve could further harm the dollar’s status as the preeminent international reserve currency, making credit dearer rather than cheaper.

The right to freedom of speech allows Trump to make demands of the Fed to his heart's content. But legally, he cannot compel the central bank to lower its benchmark interest rate. The Fed has the right to act independently, and its aim is to promote a healthy and stable economy by keeping inflation in check.