ONE OF THE ANOMALIES I have mentioned several times is the gap between the American economy's performance, and the public's perception of the quality of President Bush's economic management. The first thing to keep in mind is that the U..S economy is a huge, sprawling, diversified beast, driven in the long run by the entrepreneurial energy and the hard work of individuals. There is no room in the White House that contains a series of dials and buttons that the president can use to control the economy's performance.

That said, economic policy decisions taken by the president can affect the rate of economic growth, the inflation rate, and other variables, within limits. Lyndon Johnson set the stage for an inflationary spurt by trying to wring both guns and butter from the economy, without raising taxes to pay for the war in Vietnam. Jimmy Carter came close to wrecking the economy with a set of programs that created that least desirable of conditions, stagflation: high inflation and negative growth. In the long-run, such policies prove self-correcting, as voters turn out the rascals who, left in office, would have brought the nation to ruin, and install proponents of corrective policies, as they did when they chose Ronald Reagan, who unleashed Paul Volcker and the Federal Reserve Board to wring inflation out of the system while Reagan took the flack for the recession that was needed to cool the economy.

So what of George W. Bush? There is little doubt that he deserves credit for helping

In the years before the tax cuts made themselves fully felt, the economy grew at the puny rates of 0.8 percent and 1.6 percent, respectively. Then, things picked up--to 2.7 percent in 2003, 4.2 percent in 2004, 3.5 percent in 2005, and a torrid 5.6 percent in the first quarter of this year, before cooling to an estimated 3 percent in the second quarter.

Accelerated growth did not immediately affect the jobs market. From the time Bush took office until the hemorrhaging finally stopped in the Autumn of 2003, some 2.7 million jobs were lost. But as consumers found themselves with more money to spend and business confidence rose as the taxes on corporate dividends and profits fell, the jobs market picked up. Between August 2003 and the end of last month, over 5.4 million new jobs have been created. That drove down the unemployment rate from its June 2003 peak of 6.3 percent to its current level of 4.6 percent.

The tax cuts also proved to be partially self-financing. Treasury receipts, which initially fell, recovered sharply, as strong corporate profits and taxes on the capital gains of high earners increased Treasury revenues. Harvard's Martin Feldstein guesses that the supply-side effects of tax cuts produced one-third of the revenue otherwise lost.