The problem with the USDA is that it is being run by the wrong people with the wrong attitude. Congressmen are being paid to not investigate and demand that our regulatory agencies actually do their jobs, thus they don't.
The USDA is being run not for the people, but for big Ag who is buying off politicians.
It is the same for many other agencies in the U.S. government.
We have too many politicians who sell their responsibilities of governing to the highest bidder so they can have campaign money to win and keep their seats. Money buys perception in politics and as long as they are not held accountable, they will sell out the public interest for their own self interest.