NEW YORK (CNN) -- The White House said Thursday it is taking seriously the allegations by former hostages that Iran's hardline president-elect, Mahmoud Ahmadinejad, was one of their captors at the U.S. Embassy in Tehran a quarter century ago. President Bush told foreign reporters he has "no information, but obviously his involvement raises many questions." "As soon as I saw the face, it rang a lot of bells to me," Don Sharer, who served as the embassy's naval attache at the time, told CNN. "...Take 20 years off of him. He was there. He was there in the background, more...