President-elect Barack Obama is preparing to issue an executive order his first week in office -- and perhaps his first day -- to close the U.S. military prison at Guantanamo Bay, according to two presidential transition team advisers. It's unlikely the detention facility at the Navy base in Cuba will be closed anytime soon. In an interview last weekend, Obama said it would be "a challenge" to close it even within the first 100 days of his administration. But the order, which one adviser said could be issued as early as Jan. 20, would start the process of deciding what...