With a global commitment to scaling up AIDS care and treatment in resource-poor settings for some of the most HIV-affected countries in Africa, availability of antiretroviral treatment is no longer the principal obstacle to expanding access to treatment. A shortage of trained healthcare personnel to initiate treatment and manage patients represents a more challenging barrier to offering life-saving treatment to all patients in need. Physician-centered treatment policies accentuate this challenge. Despite evidence that task shifting for nurse-centered AIDS patient care is effective and can alleviate severe physician shortages that currently obstruct treatment scale-up, political commitment and policy action to support task shifting models of care has been slow to absent. In this paper we review the evidence in support of task shifting for AIDS treatment in Africa and argue that continued policy inaction amounts to unwarranted healthcare rationing and as such is ethically untenable.