President Obama signs the Dodd-Frank financial overhaul bill in Washington on July 21, 2010. Five years later, debate over the effectiveness of the legislation continues. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

A man walks past a poster advertising travel to Tehran, Iran, in Los Angeles on July 14. A nuclear deal between Iran and six world powers lifts some sanctions against Iran, but most U.S. sanctions will remain in place. Lucy Nicholson/Reuters/Landov hide caption

itoggle caption Lucy Nicholson/Reuters/Landov
Alan Schein Photography/Corbis

A customer fuels his car at a gas station in Pembroke, Mass. Economists say Americans have been slow to spend the money they saved from lower energy prices. Stephan Savoia/AP hide caption

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Aetna announced one of its largest pay hikes recently. CEO Mark Bertolini says he believes it largely could pay for itself by making workers more productive. Courtesy of Aetna hide caption

itoggle caption Courtesy of Aetna

Earlier this year, the European Central Bank, headed by Mario Draghi, launched a bond-buying program to drive down interest rates and boost borrowing. Emmanuel Dunand/AFP/Getty Images hide caption

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Depending on the amount taken in subsidies, or changes in reported income and family status, some Obamacare policyholders this year will get a bigger refund than expected and others will owe more in taxes. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP