The Republican Party has become, in short, a party of empire. The conservative movement is now a movement dedicated to American hegemonic dominion. And, given the lack of debate, both will likely remain that way for some time. These statements are true not only of the major presidential candidates, but of the vast majority of Republicans in Congress, most conservative foreign-policy think-tankers, and most high-level GOP operatives involved in policy-making. If the travesty that was our invasion of Iraq has not had the power to change these facts, it is difficult to imagine what set of circumstances could.
The context is a review of Ain't My America: The Long, Noble History of Anti-War Conservatism and Middle-American Anti-Imperialism, but the paragraph has a kind of freestanding validity.
UPDATE: It's been pointed out that I should have seized the opportunity to plug my book, Heads in the Sand, which explains why we need to understand the Bush administration's policies as imperialism in its newest guise, and why Democrats need to stop giving-in to Bush-style policies and return to espousing the sort of liberal internationalism that's guided the party and the country at its best for decades. Woo book!