Filmmaker Michael Moore has asked the Bush administration to call off an investigation of his trip to Cuba to get treatment for ailing Sept. 11 rescue workers for a segment in his upcoming health-care expose, Sicko." Moore, who made the hit documentary "Fahrenheit 9/11" ... said in a letter to U.S. Treasury Secretary Henry Paulson on Friday that the White House may have opened the investigation for political reasons. "For five and a half years, the Bush administration has ignored and neglected the heroes of the 9/11 community," Moore said in the letter. "I understand why the Bush administration is coming after me - I have tried to help the very people they refuse to help, but until George W. Bush outlaws helping your fellow man, I have broken no laws and I have nothing to hide." Harvey Weinstein, whose Weinstein Co. is releasing "Sicko," told The Associated Press the movie is a "healing film" that could bring opponents together over the ills of America's health-care system. "This time, we didn't want the fight, because the movie unites both sides," Weinstein said. "We've shown the movie to Republicans. Both sides of the bench love the film." Moore won an Academy Award for best documentary with his 2002 gun-control film "Bowling for Columbine" and scolded Bush in his Oscar acceptance speech as the war in Iraq was just getting under way. The investigation has given master promoter Moore another jolt of publicity just before the release of one of his films.