Not every old person who wants to be president should be placed on an ice floe and shoved off to sea. The GOP is largely lining up behind Trump, but at least a growing number of ambitious Republicans are forcing him to run a real primary campaign instead of bowing to him. Just listen to Chris Christie raking Trump: He’s a “self-consumed, self-serving mirror hog” who can’t take responsibility for his actions, someone who’s “self-obsessed” and can be likened to Voldemort. To mix sports metaphors, Buttigieg could be Biden’s rabbit in the primary, running so hard and so fast that Biden would pick up the pace and show the doubters his own youthful stamina. Both Newsom and Buttigieg are going to run in 2028 anyway, so why not get going now?