NEW : Lawmaker says bin Laden 's death a chance to `` break the back '' of al Qaeda . Author says family members of Lawmaker want some answers about the raid . al Qaeda publishes a statement from bin Laden 's sons . Sen. bin Laden 's , Americans , is headed to Pakistan , source says .
NEW : Lawmaker says Osama bin Laden 's death a chance to `` break the back '' of al Qaeda . Author says family members of bin Laden want some answers about the raid . The New York Times publishes a statement from bin Laden 's sons . Sen. John Kerry , D-Massachusetts , is headed to Pakistan , source says .