I'm still convinced it's something to do with the YouTube box, maybe it's having trouble scaling the preview which I believe is already a rescaled graphic - and looking again the bars at each end would I think match a failed scaling-up of that picture.
Not sure why this one and no others though but without going through the entire American political catalogue I'm not getting anyone else yet that gives that same picture box type layout of results.
edit, do you get the same for Benjamin Franklin or Rosa Parks? They get the box, though Franklin Roosevelt and Thomas jefferson don't.
(and here endeth the extent of my knowledge of that place beyond the sea)