It's a congressional law like any other congressional law. Needs to be passed by the house and the senate.

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.

>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.

This must be why life keeps getting better and better for Americans each year!