Galí (2014) showed that a monetary policy rule that raises interest rates in response to bubbles can paradoxically lead to larger bubbles. This comment shows that a central bank that wants to dampen bubbles can always do so by raising interest rates aggressively enough. This result is different...

In December 2015, the Federal Reserve Board (FRB) initiated the process of "normalization," with the objective of gradually raising the federal funds rate back to "normal"-i.e., levels that are "neither expansionary nor contrary" and are consistent with the established 2 percent longer-run goal...