NEW YORK (Reuters) - Federal Deposit Insurance Corp chairman Sheila Bair said some U.S. bank chief executives will be replaced in the next couple of months as regulators assess lenders' financial strength, Bloomberg News said on Friday, citing a television interview to be broadcast this weekend. "Management needs to be evaluated," Bair said on Bloomberg TV's program Political Capital with Al Hunt. "Have they been doing a good job? Are there people who can do a better job," Bair said. Asked about chief executives being replaced, Bair replied, "Yes," according to the report. In the last year, the federal government...