It can happen here: government really can be cut: case studies from Canada, New Zealand, and the United States.

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IN AN ERA of frightful budgets and frightened politicians, cutting government may seem like a flatly impossible task. But a look around the world--and at our own recent economic history--turns up a few inspirational examples of knife work that not only trimmed back budget deficits but created the conditions for unprecedented prosperity.

New Zealand, Canada, and the postwar United States all managed to slash the state on a grand scale. Governments shed responsibility for forests, railways, radio spectrum, and more while relaxing labor markets, slimming the welfare state, and ending price controls. Far from damaging economies or increasing unemployment, these reductions in the size and scope of government boosted GDP, improved services, and created jobs.

Government cutters faced opposition along the way, from skeptical Keynesians to Kiwi bureaucrats. But they also found unlikely allies, with left-wing parties playing major roles in the Canadian and New Zealand examples. The stories below should encourage would-be cutters and reassure skeptics: It can be done.

Turning Guns to Butter

How postwar America brought the boys home without bringing the economy down

Arnold Kling

WHEN WORLD WAR II ended in 1945, President Harry Truman faced a problem. Public opinion called for a rapid demobilization that would bring the boys home as soon as possible. But the Keynesians who were gaining prominence in the economics profession warned that a rapid decline in government spending and the size of the public work force would produce, in the late economist Patti Samuelson's words, "the greatest period of unemployment and dislocation which any economy has ever faced."

Thankfully, Truman ignored the Keynesians. Government spending plummeted by nearly two-thirds between 1945 and 1947, from $93 billion to $36.3 billion in nominal terms. If we used the "multiplier" of 1.5 for government spending that is favored by Obama administration economists, that $63.7 billion plunge should have caused GDP to fall by $95 billion, a 40 percent economic decline. In reality, GDP increased almost 10 percent during that period, from $223 billion in 1945 to $244.1 billion in 1947. This is a rare precedent of a large drop in government spending, so its economic consequences are important to understand.

The end of World War II thrust more than 10 million demobilized servicemen back into the labor market, but without the catastrophic consequences Keynesians feared. Close to I million took advantage of the GI bill to attend college. In addition, some of the increase in the male work force was offset by a decline in female labor force participation from World War II levels. But if Rosie the Riveter became a housewife, many of her friends continued to work outside the home. Over all, from 1945 to 1947 the civilian labor force increased by 7 million, or 12 percent. The vast majority found work, as civilian employment rose by 5 million, an increase of 9 percent.

In addition to the demobilized servicemen, the federal government let go of more than a third of its civilian employees--over 1 million workers. Many of these civilians had been engaged in government attempts to manage the economy. As the economist Gary M. Anderson has pointed out in The Freeman, more than 150,000 people were employed by various wartime economic regulatory agencies, such as the War Production Board, the War Labor Board, the Office of Civilian Supply, and the Office of Price Administration.

With responsibilities that extended well beyond wartime production to include restrictions and controls on the civilian nonmilitary economy, those agencies and boards...