The idea that a document more than two centuries old could have present impact on our lives, without modification, is ridiculous.
The most important part of that initial legislation, maybe only matched by the fundamental rights, is the fact that it can be ammended, and changed as time goes by.
Purely put, the Congress is elected by popular vote. If a congress is put into place that decides in favor of health-care, that can be said, to have been the will of the people (if only by proxy).
I feel the tea party takes exception to everything this president puts forward, no matter the actual policy. They aren't an actual political movement with an agenda other than 'oppose that black guy'.
And if you want to say 'stopping big government'; very few tea party types demonstrated during Bush II. For those that were, I concede that they have a legitimate desire to see the Federal Government reduced in power.