Michigan v. EPA
Citation
576 U.S. 743 (2015)
Facts
Stub — to be completed.
Issue
Stub — to be completed.
Holding
Stub — to be completed.
Rule
An agency acts unreasonably under the APA when it entirely ignores costs in deciding whether regulation is “appropriate and necessary,” even if costs are considered later in setting the standard.
Significance
Required agencies to consider costs at the threshold decision to regulate, not just in standard-setting; applied arbitrary-and-capricious review to EPA’s cost-ignoring decision.