I think this link contains the president's statement on this matter:
http://freerepublic.com/focus/f-news/1365791/posts
'The case of Terri Schiavo raises complex issues. Yet in instances like this one, where there are serious questions and sustantial doubts, our society, our laws, and our courts should have a presumption in favor of life, Bush said.
'Those who live at the mercy of others deserve our special care and concern. It should be our goal as a nation to build a culture of life where all Americans are valued, welcomed and protected--and that culture of life must extend to individuals with disabilities.'