Mar. 10, 2005 - Former President Clinton checked into a New York City hospital early Thursday to undergo more surgery on his chest. Clinton, 58, arrived at New York-Presbyterian Hospital/Columbia University Medical Center shortly after 5 a.m. for a low-risk operation to remove fluid and scar tissue that developed in his left lung after his quadruple heart bypass six months ago. The Secret Service, police and hospital security staff conducted a sweep of the walkways and corridors of the hospital pavilion as Clinton was whisked inside through a side entrance. Doctors were expected to perform the new procedure sometime in...