If enough people disagree with health care, the party responsible will pay at the next election. That is how it works. No, the public doesn't get an individual vote on every piece of legislation if that's what you were hoping for...
And that's NOT how it's supposed to work! We're not supposed to punish the government for not listening to us. It becomes a vicious cycle. They're supposed to ask us NOW if we want something or not BEFORE it becomes law. Not tell us "fuck you, just don't vote for me next term".