An American would have to argue this while running for office, and then argue it in Congress. Alternatively, get a position to exploit the "copyright exception" provisions.
Or like most laws, an interested group find a way to get an audience with lawmakers to brief them on their concerns, help build consensus amongst their peers and staffers, and after work in non-publicized committees the main the details of the law get tacked onto some bigger bill and passed. Contrary to popular belief congress passes all sorts of laws on a bipartison basis regularly - just with little publicity, do to the mundane nature of many of the topics.
It's a congressional law like any other congressional law. Needs to be passed by the house and the senate.