If I passed Wallow on the street I would regard him as White. And he certainly looked White on TV today. Even if he's not one hundred percent White, what if he's say 7/8? Where do you draw the line? If the 1/8 is black, historically that's a different matter because of the one drop rule that White liberals in particular still enforce.
It's a matter of individual perception, some people are super sticklers about such things and others aren't, myself included. We've had a very few posters here over the years who claimed Southern Europeans aren't White; they didn't last very long.