Once passed by both chambers, the bill then goes before the President. The President may issue a signing statement, another interpretation of the bill, and perhaps the first indication of how the executive branch will enforce the legislation.
The Law Library of Congress has a very useful site discussing the use and authority of presidential signing statements.
It may sound unconventional, but remember that you can contact your federal Senators and Representatives. Sponsors have put much time and energy into drafting their bills. They often have legislative aides in their offices to field information requests. Consider going straight to the source.
Weigh in on the Presidential signing statement debate.
The practice of Presidential signing statements has been: