If I were pulled over with hundreds of thousands of dollars in cash I would be expected to prove that it was obtained legally. Unfortunately for the persons involved here the cash was obtained in a manner that is not legal in the United States.
To be clear, I think Civil Asset Forfeiture should be abolished and that all recreational drugs should be made legal. However, that is not the case and I don't think these particular drug dealers should get a pass just because they have more money / political clout than other drug dealers.