I’ve said it before on BoingBoing but this bears repeating, our constitution and bill of rights constrain what our government is allowed to do. They limit the powers of government and those limits do not end at the border. Protections afforded the people are afforded all people - not citizens or people already within the U.S. but all people everywhere. Our government has no legitimate powers which would allow them to strip you of your rights under our laws over the technicality of location or country of origin.
We have let these basic principles wither on the vine and become mired in bureaucratic double speak, policy, and procedure but they are still very much part of who we are as a nation.
If Putin the Emperor, then I’d say Trump is Admiral Motti. Let the force choking begin.