actually that's not proof positive of why at all. especially since that type of fraud exists in far greater excess at the top level income and corporate tax levels. welfare fraud is a drop in the bucket compared to corporate tax fraud so no one's taxes should be lowered one dime until that's eliminated from the federal budget
The even bigger picture is that taxes need to be raised and spending slashed, if we want this country to be here in 50 years. The voting sheep, nor the people they elect, seem to really know that we can't keep inflating our money and borrowing forever...