Here's an interesting article from Newsweek on the state of congress:
What Happens When Congress Fails to Do Its Job? - Newsweek.com


The basic rundown is that the parties have more or less realigned to the point where there is no compromising. This creates an atmosphere where the checks we have on the majority party prevent effective ruling by any party in office.
In other words:
Quote Originally Posted by Klein
"We are operating in what amounts to a parliamentary system without majority rule," writes Brownstein in a recent National Journal column. "A formula for futility."
The article contains some interesting insights as to why congress has become such a joke in recent administrations. Worth reading.