"law" that allows the trumping of natural human rights, is no "law" at all.
Just who will determine what "natural human rights" are? Your concept of a natural law may very well be different than mine or everyone elses. The problem with following a "natural law" is the same with a "living constitution"...it depends on who is doing the reading into the "living" part or the "natural" part.
So I assume you are all in favor of a "Living Constitution". And may I ask just whose "natural law" are you going to follow?