https://www.u-s-history.com/pages/h926.html
For more information,
https://en.wikipedia.org/wiki/Human_rights_in_the_United_Sta...
I also expect this would lead to suspending all US laws guaranteeing human rights to non-citizens at the border. As far as I know, US agencies are not subject to prosecution by international criminal courts, which would make their employees immune to any prospect of human rights violations-related prosecution.
Human rights treaties should be arranged through the U.N. as intended that's why it was chartered, if we are not using it that way that is not the responsibility of U.S. Citizens to solve.
No one would argue that the US' Constitution is binding on any other government but it absolutely is binding on the actions of the US government, and should be so binding anywhere on the planet because the Constitution forms the basis for the US government's very existence.
There are plenty of non-citizens within its borders.
The US Constitution deliberately and carefully uses "citizens" in some spots and "persons" in others. Stuff dealing with voting, for example, uses "citizens", while things like the First and Fifth amendments say "people".
As a result green card holder (sensibly enough) has the right to free speech, freedom of religion, a jury trial, can't be made a slave, etc. They don't have a right to vote or run for the Presidency.
People might believe that green-card holders are "special" in that regard because they're on their way to becoming permanent citizens, but they would be mistaken.