With the expected appointment of Janet Yellen to be vice chairman of the Federal Reserve, President Obama would be putting a close ally of Ben Bernanke and an economist who views supporting growth as the most immediate challenge ahead in the No.

2 spot at the central bank

Source: http://www.washingtonpost.com/wp-dyn/content/article/2010/03/12/AR2010031200130.html?hpid=topnews