The Bush administration is considering whether to ask Federal Reserve Chairman Alan Greenspan to stay in office a few months past the end of his Fed board term, which expires on Jan, 31, the Washington Post reported on Wednesday. The newspaper said the delay would give the White House more time to conduct the search for a successor, which could include corporate leaders. If Greenspan stayed in office until May 11 next year, he would become the longest-serving Fed chairman, exceeding the 18 years, nine months and 29 days served by William McChesney Martin from April 1951 to January 1970. Last month, Reuters reported that Fed Governor Ben Bernanke was a leading candidate to replace Greenspan. Bernanke was nominated recently to be chairman of the President's Council of Economic Advisers