Liberal groups that are challenging President Donald Trump‘s agenda are exploring an expanded use of class action lawsuits now that the Supreme Court has slapped down judges’ reliance on universal injunctions.

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.

The Supreme Court blocked nationwide injunctions, letting Trump’s attack on birthright citizenship stand. Barrett’s analogy says it all.