Remember, I am not a lawyer, just a concerned citizen.
Let's start (as we should always start) with
the Constitution. Specifically
the Amendments.
This one:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause...
And this one:
No person shall be ... compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law...
Note that it says "The right the people" and "No person" and not "The right of the citizens" and "No citizen."
That means they apply to everybody.
Any officer or employee of the Service authorized under regulations prescribed by the Attorney General shall have power without warrant—
(1) to interrogate any alien or person believed to be an alien as to his right to be or to remain in the United States; (2) to arrest any alien who in his presence or view is entering or attempting to enter the United States in violation of any law or regulation made in pursuance of law regulating the admission, exclusion, expulsion, or removal of aliens, or to arrest any alien in the United States, if he has reason to believe that the alien so arrested is in the United States in violation of any such law or regulation and is likely to escape before a warrant can be obtained for his arrest, but the alien arrested shall be taken without unnecessary delay for examination before an officer of the Service having authority to examine aliens as to their right to enter or remain in the United States;
Note that it only applies to "any alien" or any "person believed to be an alien" - and only within the limits of asking about his "right to be or remain in the United States."
ICE has no legal authority to interrogate any US citizen and certainly no authority to demand entry into that citizen's house/apartment or make a demand for that citizen to exit their vehicle.
Trump's ICE agent killed a US Citizen.
