Recent John Doe summonses show the IRS is expanding its use of those summonses to aggressively investigate potential tax evasion. Within the past week, the IRS has received authorization to use a John Doe summons to request information from a cryptocurrency exchange. The government has also filed petitions in federal court seeking authorization to allow the IRS to serve John Doe summonses on MoneyGram Payment Systems, Inc. and other entities that may have information regarding U.S. taxpayers who used the services of Panama Offshore Legal Services (POLS).