The World Financial Crisis has shaken the fundamentals of international banking and triggered a downward spiral of asset prices. To prevent a further meltdown of markets, governments have intervened massively through rescues measures aimed at recapitalizing banks and through liquidity support....

I estimate the comparative causal effects of monetary policy "leaning against the wind" (LAW) and macroprudential policy on bank-level lending and leverage by drawing on a single natural experiment. In 1920, when U.S. monetary policy was still decentralized, four Federal Reserve Banks...