What's the point in calling them 'human rights' if they only apply to Americans. The US Bill of Rights does not make any reference to citizenship or legal immigration status in the 6th or 8th amendments (which seem particularly relevant). Not to mention you still need due process to prove the person does not have legal immigration status in the first place.

There isn't really any ambiguity here, unless the law specifically targets citizens or people with a valid legal immigration status the law protects illegal immigrants as well.

I'm not very well versed in US law but it's my understanding you can't shoot a man down in the street for jaywalking because he's a criminal and thus not protected by the law.

"All animals are equal, but some animals are more equal than others."