The rights mentioned in the Constitution have been generally understood to apply to people in the US. Likewise, there was a time when rights did not apply to b

The rights mentioned in the Constitution have been generally understood to apply to people in the US. Likewise, there was a time when rights did not apply to black people. It's certainly possible we could pass an amendment extending rights to all non-citizens, but it would have to be done in order for the distinction that irks you to be fixed. Probably the most realistic route for that to happen is that via the UN or other treaty talks, pressure is put on the President and Congress to pass such an amendment. But people who point to international law and then scoff at the US for breaking it really should focus their scorn on their own countries for shortcomings on foreign affairs politics with the US.