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...

Subdued economic activity and low tax revenues, especially during crises, drive borrowing and increase public debt. During these periods, to ease the debt burden, central banks may face pressure to deviate from policy targets. Under fiscal dominance, debt sustainability relies on low interest...