A student at Yale University who was once a roving ambassador for the Taliban regime in Afghanistan has been denied admission to a degree-granting program at Yale, one of the student's financial supporters said yesterday. The student, Sayed Rahmatullah Hashemi, apparently can continue to take courses at the university as an untraditional student in a non-degree program, as he did during the past academic year, said Tatiana Maxwell, the president of the International Education Foundation, which was created to raise money to send Mr. Hashemi to Yale. It was uncertain yesterday whether Mr. Hashemi, who is 27, will do so;...