Film major student told me: My best guess is that its the shadow of his collar against his neck. Contrast and color is turned up for tv which could make this more dramatic looking. However, I've never seen it look exactly like that I've seen other things kinda similar. As for a mask, I doubt. Solely because of the way his hair is laid. You can lay hair for sfx masks easily, but the specific tones in his roots to his strand as well as the small amount of stubble doesn't seem masklike to me. If they were trying to fool the world I'd really like to think they'd be sure they put on liquid latex or something to keep everything solid. Especially, if it is a mask, why would they lay the edges by his mouth and eyes so well but fail specifically the neck by his tie? Though I guess his tie could have helped rub it up, even that is a stretch. Final verdict, weird for sure, could definitely be a camera setting or broadcast colorant error. If its sfx, someone should be fired. Seams are the most important thing when making latex masks.