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 ruling left unsettled the question of whether children born to immigrants without full legal status in the United States are entitled to automatic citizenship. So what happens now?