Mnuchin reveals White House lawyers consulted Treasury on Trump tax returns, despite law meant to limit political involvement - The Washington Post

The law allowing Congress to request returns was designed to exclude the White House from the decision-making process. ....
https://www.washingtonpost.com/business/economy/white-house-treasury-lawyers-discussed-trumps-tax-returns-before-democrats-request-mnuchin-says/2019/04/09/9693618e-5ad2-11e9-842d-7d3ed7eb3957_story.html