Public trust: does not require finding of illegality. Financial disclosure to reveal conflicts of interest and others who serve the public trust is relevant as background, and what to watch for, not just whether it creates an illegality or not. Payback: Where might payback be expected from a high poobah lender, for lending to a high poobah debtor, now with their high poobah debtor(s) in high places. The watchers are interested.
As this disclosure matter has been of note since the campaign of the present President, who promised at that time to disclose his tax returns, it is not inequitable to require this provision to be retroactive for this provision. The President may apply for a waiver of this suspension in case the dog ate the returns.