I am not even kidding about this. Write him in.
Our only other options are the bombastic billionaire businessman who wants the attention, but not the job, or the shrill shrieking shrew who wants the job so desperately that she is willing to mow down everything (and everyone) in her path to get there. (Funny thing is, she already served two terms so legally, she really can't be Prez again. Legal, shmegal, who cares? Not her.)
Tom Selleck. He has what the others don't - maturity, wisdom, courage.