In the USA constitution is the concept in inalienable rights.
"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness"
The wording is a bit dated and off considering the separation of church and state (mentioning a Creator) is awkward and can only be taken metaphorically.
But essentially the USA Constitution recognises that USA people have some rights that ought to be protected. One would think that privacy, and choice (a.k.a. liberty) fall under this.