Good point. But it appears Trump has changed his mind. So is Sessions up to the task?
It appears? You've just stumbled upon the problem. Clear, specific instructions need to issued if Trump is going back on his earlier decision to not pursue an investigation of Hillary. And those instructions to the AG should not be issued with a tweet.
On what day did Trump change his mind? And yes, Sessions is more than up to the task. Is Trump up to the task of issuing a clear and specific instruction(in private) to the DOJ rather than sending out tweet after tweet?