I think the Founding Fathers would be quite dissatisfied with the current state of affairs...
(Not because of ObamaCare, people please)...
Whatever "Life, Liberty, and the pursuit of Happiness" meant to them back then, it doesn't IMO match the reality today.
As aristocratic (and rich) as the FF were, I can't help but think that they would frown on the complete lock that money has on our current government. I think they would be confused at the almost complete dis-function of the 2013 government.
As Hoax said, they did their level best to construct a government with appropriate checks and balances so that we could escape the monarchy and build 'a more perfect union', but these days 'monarchy' has been replaced with 'plutocracy'. The system they created isn't quite working, not because it's a flawed system, but because unfettered money has altered the game, with increasingly cascading results.
And so it goes...