The debate over U.S. monetary policy is in a new phase. There is no longer any question that the Fed allowed itself to fall way behind the curve in the second half of 2021 and early 2022, calling its credibility into question. It is equally clear that, as its critics urged, the Fed has since moved aggressively to contain inflation by raising rates and quantitatively tightening. After these steps, along with the president’s releases from the Strategic Petroleum Reserve and some good luck, the Fed has regained its credibility as an inflation fighter.