Why Mr. Obama is favoring Bernanke as Chairman of US Federal Reserve.

[jb100]

Why Mr. Obama is favoring Bernanke as Chief of US Federal Reserve?Although Bernanke was nominated on 1st February 2006 during the tenure of Bush administration .Brainy people of USA changed the then president Mr.Bush (Junior) for his policy on economy , war and recession.But it is strange that the Current US president Mr. B.Obama has re-nominated him again for the second term effective from February 2010.Do you think it is a good step for the interest of US economy in particular and world economy in general?