Chairman of the Federal Reserve Ben Bernanke testifies before the Senate Banking, Housing and Urban Affairs Committee on Capitol Hill in Washington July 22, 2009.  By Patricia Zengerle and Ross Colvin
OAK BLUFFS, Mass., Aug 24 (Reuters) – U.S. President Barack Obama will reappoint Ben Bernanke for a second term as chairman of the Federal Reserve on Tuesday, a senior administration official said on Monday.