Re:I've been thinking about this for a while (Score 1)

And I think there's a lot of value to it, especially if you use a distributed VCS, like git or mercurial.

In fact, I've even set up a github project that tracks the US Code. I have a small Python script that retrieves the entirety of the code from uscode.house.gov and extracts and organizes the titles. There's a cron job that runs this process daily and commits any changes to the local repository, then pushes them to github. So you can use the github project to track the changes that are delivered into the final version of the law.

CivX has scraped the wayback machine of uscode.house.gov and has changesets from all the way back to the dawn of time.