from The Conservative Treehouse:

Democrats on the House Ways and Means Committee used an arcane law, well over 100 years old that permits the Chairman Committee, Chair Richard Neal (D-Mass.), to review the personal tax filings of any American, in order to obtain Donald Trump’s personal tax filings from the IRS.

However, even in the hands of the committee, strict privacy laws still applied to the tax filings unless the committee interceded and voted to make them public.  That’s exactly what the Democrats in the committee did today with a party-line vote.