Sitting en banc on remand from the Supreme Court, the Fifth Circuit has dismissed as moot the appeal of three Venezuelan nationals challenging their potential removal under the President's Alien Enemies Act proclamation targeting Tren de Aragua, after learning at oral argument that the government had already removed all three petitioners under ordinary immigration law rather than the Act.
The Court held that because no class was ever certified and no named petitioner remains in the country, there is no one to whom the court could grant effective relief, and it declined to add new class representatives on appeal. Concurring opinions would have gone further and ruled for the government on the merits, reasoning that courts must defer to the President's determination that an invasion is underway and that the notice provided to detainees satisfies due process.
The full text of W.M.M. v. Trump can be found here: https://www.ca5.uscourts.gov/opinions/pub/25/25-10534-CV4.pdf