The NAM and 8 other business associations filed an amicus brief supporting Murray Energy's challenge to EPA's proposed rule to substantially regulate greenhouse gas emissions from existing power plants. According to the EPA, the rule's annual compliance costs will reach at least $7.3 billion by 2030, and manufacturers will see dramatic electricity cost increases and less reliable service as a result.
The NAM amicus brief argued that Section 111(d)(1) of the Clean Air Act prohibits EPA from setting performance standards for sources that are already regulated under Section 112. EPA's interpretation would create double regulation, making power plant operation more expensive and conflicting with the purpose of Section 111(d). The statutory language is not ambiguous, and EPA's interpretation should not be given deference by the courts.
On June 9, 2015, the Court dismissed the challenge because the EPA has not taken final agency action that would allow a court to review it. The criteria under the All Writs Act for issuing an order against EPA's plans are not met, and the fact that some companies may be incurring costs in anticipation of the final rule does not justify court intervention.