As long as we're talking about Obama's appearance, I need to ask something that's been bothering me for months. Maybe someone out there knows the answer; at least it's worth a shot:

Obama's face looks "lopsided" to me. The left side looks higher than the right side. His right eye droops off toward his right ear, his right ear looks lower than his left ear, and his mouth seems to droop a little on the right side. Look at his Senate photo for an example of this: current Obama pic. I've noticed this on video, too, particularly when he appears to be tired (as in his last debate with Hillary), and he often tilts his head to the right, presumably to make the droopiness less noticeable. So my question is: is this the result of a stroke, or a fight in his youth, or some sort of nerve damage, or has he always looked like this?

There's a little of that eye-droop in this pic of him as a young man -- younger Obama pic -- but it seems to have gotten more pronounced.