National Association of Manufacturers v. Department of Defense
Supreme Court of the United States
Argued October 11, 2017 Decided January 22, 2018
Full case name	National Association of Manufacturers, Petitioner v. Department of Defense, et al.
Docket no.	16-299
Citations	583 U.S. ___ (more) 138 S. Ct. 617; 199 L. Ed. 2d 501
Case history
Prior	Murray Energy Corp. v. Department of Defense, 817 F.3d 261 (6th Cir. 2016); cert. granted, 137 S. Ct. 811 (2017).
Court membership
Chief Justice John Roberts Associate Justices Anthony Kennedy · Clarence Thomas Ruth Bader Ginsburg · Stephen Breyer Samuel Alito · Sonia Sotomayor Elena Kagan · Neil Gorsuch
Case opinion
Majority	Sotomayor, joined by unanimous
Laws applied
Clean Water Act

National Association of Manufacturers v. Department of Defense, 583 U.S. ___ (2018), is a United States Supreme Court case.^[1] At issue is which court will hear cases that define the term Waters of the United States for the purpose of rule making, to the exclusion of the states.^[2] The case is the successor to North Dakota v. EPA, among others.

Facts and prior history

The United States Army Corps of Engineers and the Environmental Protection Agency engaged in rule making to define Waters of the United States for the purpose of promulgating other environmental rules. The State of North Dakota, joined by other states, challenged the definition. The states won an injunction which was subsequently challenged in the Sixth Circuit Court of Appeals. This case will settle the matter of jurisdiction.

The Court heard oral arguments on October 11, 2017.

Opinion of the Court

The Court issued an opinion on January 22, 2018.^[3] Associate Justice Sonia Sotomayor authored the unanimous opinion of the Court.