Part of the problem of Sudan-US bilateral relations during the past few decades is that the professional diplomats have very little say in crafting an American policy towards Sudan. It was the lobbyists, activists and NGOs who played a crucial role especially after the outbreak of the second civil war.
With advent of the Ingaz regime and the escalation of that war those groups consolidated their efforts in a simplistic way mainly the Christian lobby that looked at the struggle as a persecution of Christians, and the Black Caucus that looked at it as targeting Africans by the Arabs, in addition to the liberals and human right activists, who are critical of Sudan's human rights record.
...