An American student charged in a conspiracy to kill President Bush can have his own doctor examine him for evidence that he was tortured while in Saudi custody, a federal judge in Alexandria ruled yesterday. In granting the defense request, the judge took no position on whether Ahmed Omar Abu Ali of Falls Church was, in fact, tortured in Saudi Arabia before being flown back to the United States and charged last month. Defense attorneys contend that he was — and that he has the scars on his back to prove it. Prosecutors say a doctor who examined Abu Ali concluded he wasn’t.Full Story