In the February 2, 2010, Wall Street Journal, Amity Shlaes reviews Franklin Delano Roosevelt's war on business, a war that began in 1935 and didn't end until World War II began. Our current president, she argues, should learn from FDR's mistake:

You get the feeling President Obama is girding for battle with the financial sector. In last week's State of the Union address, he promised to regulate the industry. On Jan. 21, he was blunter, warning that he would not let companies that enjoyed "soaring profits and obscene bonuses" block his financial reforms. "If these folks want a fight," he said, "it's a fight I'm ready to have."

This declaration of war echoes that of Franklin Delano Roosevelt. In 1936, late in his campaign for a second presidential term, FDR spoke of the challenges of "business and financial monopoly, speculation, reckless banking." Wall Streeters and businessmen hated him, he said, adding that "I welcome their hatred.

Then Roosevelt escalated: "I should like to have it said of my first administration that in it the forces of selfishness and the lust for power met their match. I should like to have it said of my second administration that in it these forces met their master."

Mr. Obama might want to stick to a moderate approach. FDR's war against business played to the crowd, but it hurt the economy. While monetary policies impeded recovery in the late 1930s, it was the administration's assault on companies and capital that ensured the Depression's duration....

The result of it all was the Depression within the Depression of 1937 and 1938, when industrial production plummeted and unemployment climbed back into the higher teens. Even John Maynard Keynes chided FDR for his attitude about businessmen: "It is a mistake to think they are more immoral than politicians."