Okay so let's think about this for a minute. According to how the founding fathers created this amazing country, I think they would be happy in many aspects. But at the same time there are some issues that are occuring in the government that they wouldn't be so proud of. But we can't really say what these aspects would be because the American population as a whole doesn't have a clue of some of the things the government does. Every country has its corruption, even the US and this is something the founding fathers would be sad about. But there are plenty of things the American people should be proud about.
91% of Americans don't know jack about the Founding Fathers...
I'm not of the opinion that the Founders views would've remained stagnant given the accumulated knowledge, experience and world events over the years, or that they would find a country with a stable political climate and the world's most powerful economy and military to be a disappointment.
If you build a man a fire, he'll be warm for a day.
If you set a man on fire, he'll be warm for the rest of his life.
Mt. Rushmore: Three surveyors and some other guy.
Life goes on within you and without you. -Harrison
Hear the echoes of the centuries, Power isn't all that money buys. -Peart
After you learn quantum mechanics you're never really the same again. -Weinberg