Do Illegal Aliens Have Constitutional Rights?

[Kuros]

No they don't. The courts do not always make the right decision.

You're absolutely right. Often the Supreme Court does make the wrong decision.

But please read the wording of the DPC and EPC:

Nor shall any state deprive any person of life, liberty or property without due process of law; nor deny to any person within its jurisdiction the equal protection of the law.

You would need extensive legislative history to contradict such plain and clear meaning. The drafters of the 14th Amendment made no distinction between citizen or non-citizen, legal resident alien or undocumented alien. Thus, the Court is not free to do so.