There will be more legal battles — both over this executive order and the countless other legally debatable actions taken by the new President thus far and in the weeks, months and years to come. And the President will undoubtedly win some of those battles — as he should. But I can't help but to think that a small part of yesterday's ruling was a not-so-subtle effort on the part of three very different federal judges to lay down a marker, and to make it clear to the President that, even if he can bully or run roughshod over other institutions designed to rein in an overzealous executive, the courts are largely immune to his charms, threats and tweets.