Are Congress' Extreme Politics Eroding Our Democracy?

Even some long-time Republicans are calling the current Congress the most dysfunctional since the Civil War. Public approval is 14 percent -- up from nine. What do Tea Party members have to do with it?  Are they idealistic Mr. Smiths lost in Washington or another group of obedient servants to special interests? Are both parties helping plutocrats hijack the government, despite the priorities of most voters? How does this Congress compare to those of the past when it comes to addressing the urgent problems that face the American people?