Nor do I concede that the US would view a democratic and capitalist and wealthy nation dominating another region as a threat to its fundamental intersests, or that it should do so. Mearsheimer merely asserts that, without offering up any really compelling arguments as to why that should be so.Well. The explicit declaration that no state will be allowed to challenge the worldwide military supremacy of the United States constituting an integral component of Bush's national security strategy unveiled on September 20th seems like a good indication to me...
The National Security Strategy of the United States of America
Why don't you cut and paste the relevant exerpt? The chapter headings do not assist me in finding the relevant passage.