Tracking federal legislation is easy with GovTrack. This description is from their web page:
“GovTrack.us is an independent tool to help the public research and track the activities in the U.S. Congress, promoting government transparency and civic education through novel uses of technology. You'll find here the status of U.S. federal legislation, voting records in the Senate and House of Representatives, and information on Members of Congress, as well as congressional committees and the Congressional Record.
The site is a research tool, but also a (totally free) tracking service. Pick up Trackers throughout the site to make a personalized feed or get email updates. You can also embed a few widgets on your own webpage to keep your visitors up to date about legislation. We also have a unique visitor Q&A: ask a question about a bill and see if other visitors will provide an answer.”