That said, a lot of this comes down to a failure in education around privacy and the cultural norm around folks thinking they have nothing to hide. The intuition most people have around privacy, and security, is incredibly poor.
Others do have constitutional rights, but the legislative and executive hold plenary powers in the realm of national security and immigration.
You can read the bill of rights here (no mention of citizens or national security): https://www.archives.gov/founding-docs/bill-of-rights-transc...
I'm not a lawyer, but see the privacy act, FISA and EO 12333.
Human rights are “endowed by our Creator” and so the actual function of the Constitution is to protect those rights, and any logical person could reason that our Creator would probably not endow only certain persons or citizens with those rights.