Early this morning, apparently in response to a segment on Morning Joe, President Trump unleashed a Twitter storm about the travel ban cases, one of which has been appealed to the Supreme Court.
These missives followed his Saturday-night tweet, issued shortly after the terrorist attack on London Bridge:
As a threshold matter, it is entirely inappropriate for Presidents to comment on cases while they are pending before the judiciary. Calling the courts “slow and political” is beyond the pale. I dedicated an entire chapter in my book Unraveled on presidential commentary from Franklin D. Roosevelt to Barack Obama concerning pending Supreme Court cases. Alas, we have moved far beyond the usual bounds of objections, so I will put this aside for the moment. Far more pressing is what these barbs reveal about the President’s grasp of his own administration, and how it affects the appeal in IRAP v. Trump.
First, his tweets show utter disregard for the Justice Department’s legal strategy. According to the Solicitor General, the 90-day ban on entry from certain countries was never meant to be a permanent policy. Rather, it was a pause designed to provide the government an opportunity to reassess its vetting procedures. By insisting on calling the policy a “travel ban”—notwithstanding his attorney’s insistence to the courts that this is not what the policy about—the President undermines the Solicitor General’s arguments about the nature of the policy. Here, the “sole organ” puts his foot in his mouth." Lawfare
https://www.lawfareblog.com/all-presidents-tweets