"It doesn't have to. The Constitution and the Bill of Rights are limitations on the government. THe limitations have no exceptions. As such the Courts consistently rule that the 'rights' of citizens apply to all similarly situated individuals. If you want more, you will need to pay expert rates.
The above is not an opinion, it is the state of the law in this country."

The Constitution is, and will always be, up to the interpretation of the Supreme Court. Your opinion of the Constitution is just that, up and until you are a seated member of a majority ruling on the Supreme Court. It (the Constitution) sure isn't a bad place to start, but law does evolve...sometimes too much in my humble opinion.