Oil States and Food Relief

An article on Fox News website notes that the OPEC states have given very little to the United Nations for world hunger relief. Now, I don't know if I'd give to the U.N. either. However, these filthy rich governments are not giving in any way, shape, or form. It's been long noted that the oil states would have enough funds to peacefully resolve the Palestinian problem by relocating all the Palestinian people into their countries. So how is it that the United States is always the morally deficient nation in world politics?