zlacker

>And it'd take millions of dollars, and have no conventional ROI, so no one's going to do it.

Your pessimism is unwarranted. There is already one user on GitHub that scrapes the US Code and mirrors it. He even tags the changes so you can diff them quite easily.

https://github.com/divegeek/uscode

>>sc68ca+(OP)
It also wouldn't have $0 ROI because there are people who will pay for advanced services built around the law-making process.

Here's an example of a service built on Ontario laws (disclosure: I made it): www.ontariomonitor.ca. It emails people when a bill passes a committee or when new laws are introduced (+ lots of other stuff).