You seem to be arguing that all us rich Americans should be taxed to feed the poor/hungry, but now, it's only the poor/hungry in certain countries, not all countries. Now then, who is supposed to be the decider of which poor/hungry people are left to starve and which are graced by your altruistic tax on me?The hard reality here is while I don't want to see people in Africa starving, I don't want to starve myself. My first responsibility is feeding MY family. If you really want to help starving people, there are private charities that you are free to donate as much as you can to.
Quite frankly, my charity is generally local. The welfare of those in my community comes way before an concern for people thousands of miles away, living under corrupt, oppressive dictators who will simply use the world's largess to enrich themselves and solidify their control
But this won't raise the cost of feeding your family, and we can bar certain countries from receiving our aid.