** FILE ** In this April 16, 2008, photo, Janet L. Yellen, president and CEO of the Federal Reserve Bank of San Francisco, speaks about foreclosures to the Bay Area Council Outlook Conference in Alameda, Calif. President Obama on Thursday, April 29, 2010, named Ms. Yellen to be vice chairwoman of the Federal Reserve and filled two other vacancies at the central bank whose decisions influence economic activity, employment and inflation. (AP Photo/Paul Sakuma)