 Had he paid his taxes, he probably would have been fine. There were other crimes related to his work overseas. There's a type of form that you need to file with the U.S. Treasury Department if you have huge wire transfers overseas. He didn't file those forms. He also didn't fill out this Foreign Agent Registration Act form. So he eventually pled guilty to a whole range of crimes. There was plenty more that he could have been charged with that he wasn't.