Before the global financial crisis, the assistance of a lender of last resort was traditionally thought to be limited to commercial banks. During the crisis, however, the Federal Reserve created a number of facilities to support brokers and dealers, money market mutual funds, the commercial...

The worst global downturn since the Great Depression has caused ballooning budget deficits in most nations, as tax revenues collapse and governments bail out financial institutions and attempt countercyclical fiscal policy. With notable exceptions, most economists accept the desirability of...