US Rep Bruce Poliquin(R-ME) whispers to an unidentified man standing near a TV monitor with the quickly changing National debt as Federal Reserve Chair Janet Yellen delivers remarks before the House Financial Committee July 15, 2015 on Capitol Hill in Washington, DC. Yellen stuck to her forecast for an increase in the Fed's key interest rate later this year on Wednesday, predicting a pickup in the US economy. But Yellen also warned that continued turbulence from Greece and China poses risks to the US growth picture. In prepared testimony to Congress, Yellen said that the labor market still showed "some" slack, suggesting accommodative monetary policy from the US central bank was still merited despite the unemployment rate falling to 5.3 percent. AFP PHOTO/PAUL J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
