You're also winning that Bush was one of the best Presidents for Africa ever - however its not something that I often hear Conservatives touting, usually its the Liberals who will give Bush some conciliatory Kudos for this. Furthermore, I don't think you're going to win that aid to Africa is an area consistently pushed by Conservatives and their politicians. Finally, in the book everyone is happy with dropping aid into the quarantined continent, so government aid is not necessarily the main conflict - rather the conflict is over direct assistance in the forms of boots on the ground which goes against the governments quarantine of the African continent.
Now, You are winning that christian conservatives - hopefully a great many - would be interested in going to Africa and helping people in the case of a massive epidemic. However, I find it insulting that it is only Christian Conservatives that are advocating this policy. Card clues us in to the fact that its a conservative thing - and not just a Christian thing - by having Fox News as the only compassionate network willing to fairly air and discuss the wholly Christian demonstrators. I feel strongly that both secular and non-secular Democrats should be represented among the compassionate protectors seeking to bring further aid to Africa. Liberals are probably more likely to be rallying outside the Whitehouse to protest a cruel international policy. Honestly, when have conservatives ever rallied to protest against any US foreign policy? High levels of state security (which in the book is the President's justification for the quarantine that prevents direct assistance) is not something that you typically hear conservatives railing against.
Furthermore, while conservatives do donate more money to charities the strongest correlation for charitable donations isn't along the conservative liberal access - instead it's along the lines of religious, non-religious.
So more charitable donations by conservatives really translates to more church donations. Now, while churches do a lot of good things in the world, concern for sick and dying people is not necessarily the reason people donate - motives such as feelings of piety and social status in the church community probably figure more prominently.
So ya, I still think it's lame for Card to make-out the Left to be so completely apathetic in the face of a cruel international policy toward the continent of Africa. I know Chomsky would be against it - and all us psuedo-intellectual lefties are gonna follow what Chomsky writes.