Not according to Bush:
http://www.washingtonpost.com/wp-dyn/content/article/2006/10/17/AR2006101701484_pf.html
http://www.washingtonpost.com/wp-dyn/content/article/2006/10/17/AR2006101701484_pf.html
asserts a right to deny access to space to anyone "hostile to U.S. interests."