U.S. Federal Reserve chairwoman Janet Yellen testifies before the Senate Banking, Housing and Urban Affairs Committee on the “Semiannual Monetary Policy Report to the Congress”, at Capitol Hill in Washington D.C., the United States, Feb. 14, 2017. U.S. Federal Reserve chairwoman Janet Yellen said on Tuesday that the Fed will consider whether to raise interest rates at upcoming meetings. RSS/Xinhua/Bao Dandan.