NOAA law enforcement collected close to $100,000,000 in fines and seized goods from fishermen over the past several years. The Department of Commerce IG investigated and found that only about $60M could be accounted for, while some $40M is just plain gone. This is not taxpayer money, but money taken in huge chunks from fishermen for infractions, some very minor. Claims by the fishermen of coercion and extortion were validated by the IG. See the IG reports here, here, and here.
One single fisherman, Larry Yacobian, ended up paying $450,000 in fines and owing $250,000 in legal fees. He was forced to sell his boats, his gear, and the farm that had been in his wife's family since the days of the Pilgrims. A special master appointed by the IG found that Mr. Yacobian had been treated unfairly. The government returned $400,000 to Mr. Yacobian, and the Secretary of Commerce, Gary Locke, apologized personally.
But nobody has ever been punished.