Why is Fraud so Hard to Prove?

I just read an article that set my blood pressure through the roof! This writer has put down exactly how so many programs are so fraught with fraud at the federal level, and why there seems to be nothing "We the People" can ever do about it. Read the article and see what you get from it!

http://biggovernment.com/lstranahan/2011/12/30/building-the-perfect-beast-how-the-political-class-their-cronies-rig-the-system/