Found: The memo by the Office of Legal Counsel issued to Trump a few hours before his executive order on immigration was released, okaying it for release:
January 29, 2017
This is the best Executive Order ever. Everyone says so. Thanks, Mr. Commander-in-Chief!
— Office of Legal Counsel
P.S. The Muslims won’t like it. Sad.
– Badtux the Snarky Penguin