<p>Those worried about the recent sluggishness of the American economy should look to the time of Franklin D. Roosevelt. When he entered office in 1933, unemployment was at 33%, there was almost no public-sector relief for the jobless, 45% of family homes had been -- or were in imminent danger of being -- foreclosed, and the Chicago Grain Exchange, the New York Stock Exchange and the banking system had collapsed. Almost no one was engaged in agriculture on an economically sustainable basis and the nation's food supply was apt to be severely interrupted at any time.</p>