Waitaminute. This kid comes in here and asks for a game board design for a game we don't know the rules about (I mean other than the bill-to-law process), and with no definable "win" scenario to the game, and then proceeds to act like a little prick?
No. Upgrade that.
A game of this theme should have
1. A starting point for how you join the game. Maybe each player has to draw a cause card that states the bill they're trying to get into law.
2. A defined path through the game from start to finish. So each player has to get their cause to become a bill and then a law as they progress through the board. First one to law wins?
3. Events throughout the course of the game that define milestones reached.
3a. First would be to acquire a powerful lobbyist group. I'm thinking roll of the dice determines the power of your lobbying group.
3b. You then have to earn the millions needed to "coax" a congressional representative with free dinners at gourmet restaurants, lavish hunting trips, recreational toys, whores, etc. so that they'll introduce your motion on the floor.
3c. Now you need to earn extra money to help your congressional rep "convince" the other congressmen & congresswomen of the need for your pet bill. Once you've garnered enough preliminary support you'll get the motion to committee.
3d. Now the committee cards come into play. Draw the chance card that says things like "You've got photographic evidence of the senator from Iowa having a tawdry affair with Miss Teen Iowa. You gain fast track through committee!"
3e. Setback events are needed as well. Committee cards could say "You're congressional rep inadvertently wins a skins golf match against the committee chair. Your bill goes to sub-committee for three rounds".
3f. Once you've gotten through one chamber you then need to get to the next chamber (House to Senate, Senate to house). So you'll need to go though the above steps again.
3g. Oh Noes! Someone rolled a filibuster on your ass! If they can ramble on for 3 days straight they can kill your bill! Start the sand timer!
3h. Congratulations your bill has passed both chambers! Presidential initiative roll time! You'll need to have at least two presidential election rounds throughout the game. Better hope the winning candidate has the same party cards that you do! If not it could be the veto pen (unless you have lobbyist money left over to "fund" the sitting president's after-office museum and to help promote his/her book tour).