It's only $6 billion

That's the amount of money that was improperly paid by the Department of Agriculture last year, An improper payment is not fraudulent; it's just a screw-up, such as paying the wrong person paying the wrong amount, insufficient documentation or when a recipient uses funds improperly. The error rate is 5.4% in 2013, up from 5.1% in 2012.

Here's a graphic listing the various Agriculture programs: