IF the position that unalienable rights cannot be modified is the answer, then they cannot be modified for ANY reason. No matter how honorable. So the crux of the argument becomes; is there any right that is unalienable?
There certainly are some that argue there are such rights; descended from natural law, the flowery language of the Declaration of Independence (which, as a footnote, has no legal standing; it is mere puffery announcing the intent to hold a revolution), or some other source.
My post, of course, points out what a tragic world we would live in if we took this argument seriously.
"The white men were as thick and numerous and aimless as grasshoppers, moving always in a hurry but never seeming to get to whatever place it was they were going to." Dee Brown