Another important case decided today.
The Supreme Court sharply limited the power of the EPA to enact regulations without Congressional authority under the major questions doctrine. This decision returns power to Congress and limits the power of unelected bureaucrats in federal agencies to make laws on major issues without clear congressional authority. The Constitution assigns the power to make laws to the Legislative Branch, not the Executive Branch.
From SCOTUSblog:
Here is the opinion from John Roberts in West Virginia v. EPA: supremecourt.gov/opinions/21pdf. The three liberal justices dissent.