Rehnquist offered three rationales for the application of the non-delegation doctrine. First, ensure Congress makes social policy, not agencies; delegation should only be used when the policy is highly technical or the ground too large to be covered.
Rehnquist presented three reasons for applying the non-delegation doctrine. Initially, he stressed that Congress should be responsible for shaping social policy, rather than delegating it to administrative bodies; delegation would only be permissible when the policy requires specialized expertise or encompasses a broad scope that cannot be effectively managed by an agency.