According to two people familiar with the draft, it would eliminate the bedrock scientific finding that greenhouse-gas emissions threaten human life by dangerously warming the planet.

The E.P.A. intends to argue that imposing climate regulations on automakers poses the real harm to human health because it would lead to higher prices and reduced consumer choice, according to the two people familiar with the administration’s plan. They asked to remain anonymous because they weren’t authorized to discuss the draft proposal.