WASHINGTON (AP) - Sen. Hillary Rodham Clinton's presidential campaign said Monday it will return $850,000 in donations raised by Democratic fundraiser Norman Hsu, who is under federal investigation for violating election laws. Clinton, D-N.Y., previously had planned only to give to charity $23,000 she received from Hsu for her presidential and senatorial campaigns and to her political action committee, HillPac. The FBI is investigating whether Hsu paid so-called straw donors to send campaign contributions to Clinton and other candidates, a law enforcement official said Monday. --