Senate approves Janet Yellen as Fed chair

ROUGH CUT (NO REPORTER NARRATION)<br/> <br />The U.S. Senate kicks off its 2014 session and made history by approving Janet Yellen as the first woman to head the Federal Reserve, with a vote of 56 to 26.<br/> <br />Yellen succeeds Ben Bernanke, whose second four-year term ends on January 31.<br/> <br />Yellen has been an unwavering advocate of the Fed's aggressive steps to boost the U.S. economy as it struggled to emerge from a severe economic recession.