“There is no clearer example of a company that should be held to criminal account,” Carey Dunne, a prosecutor with the office of the Manhattan district attorney, said as authorities charged the company and its CFO, Allen Weisselberg, with 15 felony counts. Yet Thursday’s indictment left many questions unanswered. Will anyone else be charged? Has the investigation narrowed to tax evasion alone? What about other topics that prosecutors earlier indicated in court filings they were investigating?... “If you pay your employees under the table, a good rule of thumb is not to write it down,” said Daniel Hemel, a law professor at the University of Chicago.