Sounds like some kind of threat. Sounds like something Trump would say.
It's not a threat. It will surprise no one that neither the President, his reelection campaign, nor Tubervile will be pleased with this, that's a given. There will be a response.
But neither will this please the voters. It reeks of a combination of desperation and hubris above and beyond Sessions' pay grade.
Too cute by half is rarely a winning political strategy.
Sessions should have simply tweeted that he supports the President's EO suspending immigration.