Its the democratic party. i had that question too dude.
First it has to be voted on by the house and the senate. Then it goes to the supreme court. Then after the ok by the supreme court it goes to the president to be signed
The common answer for this is that it is a joke. He was singing that because he was singing a few bars. This is a wordplay on the word bar of soap, and also on the fact that bars in music are <span>a segment of time corresponding to a specific number of </span><span>beats, so it's a pun actually.</span>