** FILE ** New York City Mayor Michael Bloomberg, left, Housing and Urban Development Assistant Secretary Roy Bernardi, second from left, U.S. Sen. Hillary Rodham Clinton, D-N.Y., center, U.S. Sen. Charles Schumer, D-N.Y., second from right, and New York Gov. George Pataki, right, take questions from the media at a news conference at New York's City Hall in this April 26, 2002 file photo. Bloomberg enjoyed a friendly relationship with Clinton since he was elected to City Hall during the senator's first year as New York's junior senator but that can change should Bloomberg enter the race for the White House as an Independent and challenge Clinton, who has already declared her candidacy for the Democratic nomination. (AP Photo/Ed Bailey, File)