A review of the US Supreme Court’s decision in Trump v. CASA, Inc., which held that federal district courts’ universal preliminary injunctions that enjoin government officials from implementing and enforcing an executive order likely exceed the courts’ equitable authority granted by Congress under the Judiciary Act of 1789.

In its June 27 ruling in the legal fight over President Donald Trump’s January executive order restricting birthright citizenship in the US, the Supreme Court didn’t weigh in on which side was right.