Does anything convey the power, the austere dignity and awesome responsibility of the stewards of American democracy like the bike helmet? Why, there’s Ray LaHood, secretary of transportation taking part in a photo op wearing a sleek silver and blue helmet. I dunno about you, but the sight of the late-middle-aged secretary of a multi-billion-dollar cabinet department with his noggin encased in foam and shiny plastic is reassuring to me. Here’s a man who gets it, who’s going to spend my tax dollars not to improve the highway system to facilitate the movement of goods and citizens, but to construct...