Give this a quick gander:
money.cnn.com/2011/03/01/news/economy/ga...uplication/index.htm
It's not going to save a trillion, but saving "tens of billions" without losing any services has got to be a good place to start. Reading stuff like this is I reject the notion that we don't pay enough taxes. If congress has so much money to spend that they can waste it like this, then we are definitely paying enough taxes:
The report, requested by Congress last year, lists 34 areas where programs have overlapping objectives or provide similar services. It outlines 47 other areas where Congress could take steps to improve the efficiency of federal programs and agencies,
the report states that "savings and revenues could result in tens of billions of dollars in annual savings"