Text: Concurrently, legislation has been proposed in previous and current Congresses that would require simultaneous reductions of multiple emissions, and the Administration's National Energy Policy recommends the establishment of mandatory reduction targets for emissions of three main  sulfur dioxide, nitrogen oxides, and mercury.
Entailment: The National Energy Policy aims to establish policy to reduce emissions of sulfur dioxide, nitrogen oxides, and mercury.
Contradiction: There haven't been any proposed legislation in past and current Congresses that provide a solution to reducing emissions.