By Andrea Hogan, Mark Campopiano, Sara Orr, and Daniel Brunton

On May 26, nine western states filed an amicus brief in People for the Ethical Treatment of Property Owners  (PETPO) v. United States Fish and Wildlife Service urging the 10th Circuit Court of Appeals to limit the reach of the Endangered Species Act.

At issue in the case is a special regulation that the Fish and Wildlife Service adopted under section 4(d) of the Endangered Species Act