WASHINGTON (CNN) -- The Bush administration has brought its concerns about the detention of a well-known blogger to the Saudi Arabian government at "a relatively senior level," State Department spokesman Sean McCormack said Thursday. McCormack, speaking at his regular midday briefing, said the message delivered "was pretty clear." "The U.S. stands for freedom of expression," he said. "It is an important element of any thriving society. It's a cornerstone of any democratic society. Wherever people are seeking to express themselves, via the Internet or via other areas, whether in Saudi Arabia or elsewhere in the world, we stand with that...