According to Dictionary.com,
Tracking means to follow something.
Today I discovered a site called GovTrack. This site was created in 2004 by Josh Tauberer. Its purpose is to make it easier for individuals to track U.S. bills; As well as, comprehend what representatives sponsored or created certain bills.
-Openly sharing data
-U.S. federal legislation
-Congressional district maps
-It has been leading the open government movement since 2004.