This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.
Now, the truth. The picture may be published by anybody. The photograph may be manipulated in any way you want to, and you can publish it anywhere you want to. You can't say or imply an endorsement, but that, and saying something deliberately and maliciously false, are your only limitations.
You want it in legal form? How about this, from a government website?
In other words, a bluff. Cute language, but not worth reading. Probably written by someone who has too much time on his hands.