Yes they do. That has been well established by constitutional law
Discussion
If they sneak illegally without due process, then they should be deported without due process.
Illegal aliens are criminals, period.
Criminals get due process, that’s literally the point.
People who aren't considered legal persons don't get legal protection.
That's what Roe v. Wade was all about.
Roe v. Wade determined that unborn babies were living humans, but since the US constitution didn't grant legal USA personhood until birth (or naturalization) that the human babies weren't allowed legal protection, and could be killed.
Illegal immigrants are not legal US persons. They don't get the same legal protection.
Where are you getting any of this from? Roe vs Wade was originally determined on the basis of privacy. It had nothing to do with determining personhood.
And likewise it’s well established that non-citizens still receive due process. You’re literally just making up your own interpretation of the constitution.
The border is a line the government made up. It’s a victimless crime to cross it. You should stop trying to give so much power to the government.