Like a lobotomy. I think that's about the only way you'd be able to convince me that the system works. More specificly, I may agree that the system works theoretically, but in practice, it has failed under the corrosive properties of Human Nature.
Our system worked for a while...almost a century from its inception. But as America changed and grew, the system which our founding fathers created was unable to take the strain. IMO, the Civil War was the first clear sign of its failing. What we have now is so warped and skewed from the intent of the Founders as appear as an entirely different beast -- a more ravenous and dangerous beast to be sure.
I don't think the system can be fixed. I think, however, that people will tolerate the way things are (and are becoming). So long as the State can meet the needs of the many, the many will allow the State to do pretty much whatever it pleases.
We have become the New Rome.
Tuor