Workers with circuit boards on a production line. Istock hide caption

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Former Utah Gov. Jon Huntsman addresses the Faith and Freedom Coalition in Washington, D.C. In the upcoming Republican primaries, limits on carbon emissions — which Huntsman once supported — are not expected to be a pivotal issue. Win McNamee/Getty Images hide caption

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A laboratory technician counts isolated Escherichia coli bacteria. Oleg Popov/AP hide caption

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House Republicans leave the White House on June 1, after a meeting with President Obama about the debt ceiling. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP