No because whatever they do will effect someone negatively. And the goal of elected officials is to keep their jobs and not upset anyone. No one can make the big decisions out of fear of losing their job.
Maybe it's time for a King to take charge and get this mess straight.
The republicans are working to win the Presidency in 2012. That is the stated #1 objective. Any progress towards a reduced deficit helps the Obama re-election effort. And the republicans would rather damage the country and increase their power.
At every point the republicans have walked away from any compromise. Effectively they are killing the process.