Personally, I would have preferred that Bush be more vocal, but I understand his reservations. With the stronghold that evolution has gained in American education, we must be careful not to be branded as "anti-science".
Proponents of the ID movement and Biblical creationists aren't "antiscience", they just believe that something greater than science exists and is responsible for natural phenomena . . . like the existence of the universe, for example. To see a comparison of Intelligent Design, Secular Humanism, and Biblical Creationism, click on this picture:
What do you think?