National Security
The ACLU’s National Security Project is dedicated to ensuring that U.S. national security policies and practices are consistent with the Constitution, civil liberties, and human rights.
And the Constitution has already said that equal rights for humans despite where they come from.
Immigrants' Rights see above...
The fundamental constitutional protections of due process and equal protection embodied in our Constitution and Bill of Rights apply to every person, regardless of immigration status.
Could an immigration status be, illegal?