Of course Bandeirante, Brazil is part of the Western World. Direct descendent of Rome through Iberia. The problem with Huntington is that for him only "pure" European people are part of the Western World, so he used a racist scheme to take out not only Brazil but the whole Latin America.
Huntington was an ignorant and represented the worst of the ignorant classes of the U.S. That's all.
With respect to Obama, the U.S. was shocked to know a mulatto would be a president of the U.S. for the first time on history, and some would say it was the first time a non-white took power in the West. What a wrong statement when in Latin America we have have presidents of Mulatto, Mestizo, Indigenous and even Japanese origin, and nobody even though that was strange.
Well, at least to victory of Obama killed Huntington of a heart attack.