I’m not remotely a Constitutional lawyer and nowhere near a final authority here, but when I took Jeremy Rabkin’s Constitutional Law class at Cornell I took the final essay prompt about due process as applied to immigration decisions. I remember looking through the precedents and finding that a sovereign government is definitionally considered to have the power to control immigration (similar to the police power as so foundational it goes without enumerating) and is granted a surprising amount of unchecked latitude with how to use it. Don’t count on a miracle.