Nothing would get done, even worse then now. Too many opposing interests. Italy's problem is too many parties. If we stopped electing millionaires and those tied to the corporates we might get heard a bit. If I can find it I'll reference a great Wall Street Journal on just how badly our elected officials are in bed with the corporates. A Koch Bros dream.
The Tea Party is probably doomed to a PS in history as they never had a philosophy just an agenda. Few thoughts and no sense of history or economics behind any of them except "Stop spending"! Any economy is predicated on spending and borrowing. Otherwise it fails to produce an economy. They went to congress with one thought and it was wrong. Those that knew lacked the huevos to reign them in. Ya can't fix stupid.