Speaker Nancy Malthus

Pelosi should abstain from social engineering.

One of the more curious items in the $825 billion House "stimulus" is $87 billion to help states with Medicaid, specifically including an expansion of family-planning services. The implication is that more people mean less economic growth.

Following a White House meeting with President Obama on Friday, Republican John Boehner, the House Minority Leader, asked how spending millions of dollars on birth control will help stimulate the economy. On Sunday, George Stephanopoulos of ABC's "This Week" repeated the question to House Speaker Nancy Pelosi, who responded that "family planning services reduce costs."

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She added: "The states are in terrible fiscal budget crises now, and part of what we do for children's health, education and some of those elements are to help states meet their financial needs. One of those -- one of the initiatives you mentioned, the contraception -- will reduce costs to the states and to the federal government."

The notion that a larger population will produce a lower standard of living can be traced to the 18th-century economist Thomas Malthus. But during Malthus's own lifetime, his prediction was proved false, as he later acknowledged. Population and living standards rose simultaneously, and have continued to do so.

Ms. Pelosi's remarks ignore the importance of human capital, which is the ultimate resource. Fewer babies would move the U.S. in the demographic direction of Europe and Asia. On the Continent, birth rates already are effectively zero, and economists are predicting labor shortages in the years ahead. In Japan, where the population is aging very fast, workers are now encouraged to go home early to procreate. Japan is projected to lose 21% of its population by 2050.

The age and growth rate of a nation help determine its economic prosperity. A smaller workforce can result in less overall economic output. Without enough younger workers to replace retirees, health and pension costs can become debilitating. And when domestic markets shrink, so does capital investment. Whatever one's views on taxpayer subsidies for contraception, as economic stimulus the idea is loopy.