re: the point...
The point was that Democrats in 2006 ran for election on this concept, sneering at the spendthrift Republicans and their deficit creating ways, and then when they won the 2006 elections, the new 110th Congress enshrined the concept as part of the new order of fiscal responsibility.
They have just passed a single law that in one fell swoop accumulates about half the deficits Bush and the Republicans created (about $2.5 billion if you add all eight years up) in his entire administration. And there's more coming down the pike.
Is it necessary to elaborate further?