Nonetheless, outside of all of that, jeanie mos points out all you have to do is look at his arms to see that. >> reporter: when beto o'rourke literally jumped into the presidential race, he was up in arms, his arms. >> beyond a shadow of a doubt, if you look at the climate to get all of this done, we would be fools. >> reporter: disarming beto was not an option. >> i think we should begin with the end. >> reporter: even when sitting with his wife -- >> the last great hope of earth. >> reporter: his other arm kept escaping from her clutches. >> from every single one of us r. it was almost as i...