I am actually thinking that you are in fact correct here. Though most articles on the bills in question describe them as 'Tracking internet usage' (https://www.eff.org/deeplinks/2011/07/house-committee-approv... , http://blog.alexanderhiggins.com/2011/07/29/congress-child-p... etc) what the bill in question (and previous bills on the subject) states is the mandatory storage of assigned IP-addresses.

Now I guess one could assume that our ISP's save our browser history, however there is no mandate in this bill for access to that data.

I will look over the blog post and make edits to clarify this.

Thank you very much for pointing this out!