Windflier for SCOTUS! Doesn't matter who wins the POTUS, both parties crave your service in replacement of Scalia.
All kidding aside, it's the government that is subject to the Constitution.
Are you being intentionally obtuse? I think you are. Try to stay on topic, if you can.
The point which you laughingly evaded, is that American citizens have rights under our Constitution - NOT foreign citizens.
You and I have 4th Amendment protections, but not foreign nationals, who, by law, are required to possess a visa or green card to be present in our country. It's our government's DUTY to ensure that every foreigner on U.S. soil, is here legally. That can only be determined by actual inspection.
I honestly don't care if that inspection is performed in the normal course of contact with law enforcement or other government agencies, or whether it's overtly done by immigration officers checking papers.
Given that there are an estimated 40 million or more of these invaders in our country, I simply Do Not Care if some liberal gets their panties in a bunch about tough enforcement.