Special Counsel Robert Mueller is working with agents from the IRS’s Criminal Investigations unit as part of his investigation into Russian meddling in the 2016 presidential election, people familiar with the investigation told The Daily Beast. This elite and secretive unit’s 2,500 agents work on financial crimes, including money laundering and tax evasion, and would have access to President Trump’s tax returns. If Mueller decides to bring charges against anyone linked to Trump because of tax law violations, he will have to get approval from the Justice Department’s Tax Division. Trump has yet to choose someone to run the division, and when he does pick a person for the job, that post needs Senate confirmation.
Mueller teaming up with the IRS means he probably has Donald's tax returns.
— Scott Dworkin (@funder) September 1, 2017