Earlier quoted context omitted.
The idea of a nationwide injunction was not originally envisioned. It’s newish. Only Supreme Court in a court-sense can check the Executive. Congress can also check the Executive. Illegal aliens have less due process by law.
the Constitution entitles all persons in the US to have due process, including aliens: https://www.law.cornell.edu/constitution-conan/amendment-5/r... reversing that case law would be a bit much even for Alito, I think.
Non-citizens in removal proceedings get civil hearings, with fewer procedural protection. Expedited removal allows certain undocumented immigrants to be deported without ever seeing a judge, unless they claim asylum or prove long-term presence.
Courts have upheld that due process is contextual. It is not “one-size-fits-all” So yes, undocumented immigrants have a constitutional floor of protections but not the same ceiling as citizens or green card holders