apparently immigration law infringement only goes to court if you're trying to stop them now - if they want to send you to a concentration camp, there's no right to due process.
But about a month ago, the Court did rule people who the government wanted to send to El Salvador have a due process right to challenge that decision in regular federal court as a habeas corpus proceeding ( https://www.supremecourt.gov/opinions/24pdf/24a931_2c83.pdf ). They later issued an order that the people covered by the original ruling cannot be deported based on the Alien Enemy Act until further notice ( https://www.supremecourt.gov/orders/courtorders/041925zr_c18... ).