They are just a wrapper over congress.gov apis

https://www.congress.gov/help/using-data-offsite

If someone put you in charge, you probably would not know how to do the thing you're imagining. (For example, "classified" doesn't really apply to Congress. That's an executive branch thing. So you're already on the wrong track.) Don't fool yourself that it's just a matter of having a bright idea that's the difference between the world as it is and the world as you want it.