President Obama is focusing his review on government agencies that deal with trade and exports. Paul J. Richards/AFP/Getty Images hide caption

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Participants work on their techniques and safety procedures during a suspended-scaffolding training class in New York. Construction incurred the most fatal injuries of any industry in the private sector in 2009, according to the Labor Department. Seth Wenig/AP hide caption

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In one of the digitized images, President Kennedy sails aboard the Manitou off the coast of Maine on Aug. 12, 1962. Robert Knudsen/John F. Kennedy Presidential Library hide caption

itoggle caption Robert Knudsen/John F. Kennedy Presidential Library

Passengers move through a main security checkpoint at the Denver International Airport on Nov. 22. Some airports are considering replacing government security screeners with private companies. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images