The idea started on the outer precincts of the right. Thomas DiLorenzo, an economist who calls Ron Paul "the Jefferson of our time," wrote in September that the housing crisis is "the direct result of thirty years of government policy that has forced banks to make bad loans to un-creditworthy borrowers." The policy DiLorenzo decries is the 1977 Community Reinvestment Act, which requires banks to lend throughout the communities they serve. The Blame-CRA theme bounced around the right-wing Freerepublic.com. In January it figured in a Washington Times column. In February, a Cato Institute affiliate named Stan Liebowitz picked up the...