Large grain of salt required. But, at least they were honest enough to state (in the middle of the article), that the information on which this is based is suspect: "We do not know the identity of our source. We did not solicit the information they sent us. The source says they were motivated by our previous coverage of issues surrounding the IRS and tax enforcement, but we do not know for certain that is true. We ha…
> we do not know for certain that is true. We have considered the possibility that information we have received could have come from a state actor hostile to American interests If they have no way to verify or at least assure themselves that it isn’t this, then they have no business publishing it. Also, many of their statements are just lies in that context: E.g. We are disclosing the tax details of the richest Ameri…
"We have gone to considerable lengths to confirm that the information sent to us is accurate. We compared the tax data in our possession to other sources of the same information wherever we could find them, some of which were public (a tax return for a candidate for national office), others of which were private. In every instance we were able to check — involving tax filings by more than 50 separate people — the details provided to ProPublica matched the information from other sources."