Another view, from Mr O'Brien (who has seen fmr Pres Trump's tax returns as part of some prior litigation)
...Donald Trump and his lawyers have routinely argued that the former president would be subjected to "irreparable harm" if his tax returns landed in unfriendly hands. The Supreme Court disagreed, and refused to block a subpoena that local prosecutors in New York had issued for the records.
This doesn't mean Trump's returns will suddenly appear online. They're going to a grand jury, and Manhattan District Attorney Cyrus Vance Jr., whose office issued -- but had yet to enforce -- the subpoena, presumably will be circumspect about who gets to see them.
Even so, a dam that Trump has spent decades fortifying around his finances and tax returns has been broken. And Vance's investigation appears to be broad enough to pose a serious criminal threat to the former president, his three eldest children and the Trump Organization.
Vance is investigating Trump for possible tax fraud and falsification of business records, according to appellate court filings. His office is also examining whether Trump inflated the value of his properties and other assets to secure funds from lenders and investors. Vance's investigation also involves the former president's payment of hush money to two women who allegedly had sexual encounters with him, a possibly less-threatening inquiry that may involve campaign finance violations and falsification of business records....
Trump has spent decades inflating his wealth and his business acumen, which has also fed his desire to keep a lid on his financial records. Pride, as much as the legal perils he faces, has informed his efforts to keep Vance, other prosecutors and Congress from getting his tax returns.
(Trump sued me for libel in 2006 for a biography I wrote, "TrumpNation," alleging that the book misrepresented his business record and understated his wealth. Trump lost the suit in 2011.) ...
The Supreme Court has now given Vance fodder to pursue a criminal investigation that entails something Trump has always feared: exposure....