To battle the Great Depression, President Franklin D. Roosevelt put millions of unemployed Americans to work on New Deal projects such as repairing roads and building cabins in national parks. To stimulate today's ailing economy, Congress has enacted a $787 billion package that includes tax cuts and spending on infrastructure, including expanding highway and rail systems and weatherizing buildings. But many conservatives argue that government spending does not create jobs and merely diverts money from the private sector, which they call the only true engine of job creation. Meanwhile, infrastructure experts worry that if federal public-works dollars are spent too quickly, the money will go to eco-unfriendly projects, such as additional highway lanes that encourage fossil-fuel use and suburban sprawl, rather than to more future-oriented "green" initiatives like expanding rail and public transit and upgrading the electrical grid to accommodate alternative power sources.

Marcia Clemmitt is a veteran social-policy reporter who joined CQ Researcher after serving as editor in chief of Medicine and Health, a Washington-based industry newsletter, and staff writer for The Scientist. She has also been a high school math and physics teacher. She holds a bachelor's degree in arts and sciences from St. Johns College, Annapolis, and a masters degree in English from Georgetown University.