I have been thinking about this as an argument. We know that right wingers don't give a crap about people or what's good for them, but they do care about national defense. So here is an argument I thought of.
The US is right now involved in major wars for oil. Afghanistan (for the oil of the "stans") and Iraq (for the second largest oil deposits in the ME, and Venezuela (where much of our oil came from until recently; no we're not in full scale war there yet, but there have been failed coups of Chavez); these three are all well known. But the US also has major oil and natural gas interests in Africa, especially West Africa.
China, with its booming industry and billion people, has recently turned to Africa as a major supplier of oil. (leav-www.army.mil/fmso/documents/chinainafrica.pdf,
http://www.cfr.org/publication/10586/china_africa_and_oil.html)
So think about it: the US needs oil from the Middle East and Africa: a war in Iran? proxy wars in Africa?
And now think about the United States under a man who is half African with a Muslim name, Barack Hussein Obama. In my opinion, this man, just because of his race and lineage, will have an easier time exploiting Africa and Muslim countries than a guy named McCain. Obama has family in Kenya; he has ties to Africa. He can go in more "as a brother" (better than any Chinese diplomat) and secure American interests in the oil and natural gas producing nations of the world.
Maybe Obama will be better for energy security, especially if it involves overseas interests in African and Muslim countries, than McCain.