Sneakylong
It's just like you to cherry pick to paint a picture that fits with your confirmation bias. This is ONE person's definition. It's not based in fact it's based on opinion. A person with one white parent and one black parent is not black nor are they white. You want to confuse this issue for some bizarre reason. Is it because you want to belive Obama was the first black president? He wasn't. Again, he was the first not all white or half black president, or half white president. Not black. Kaepernick is the same.
By the definition you've applied I'll bet if Ancestry.com was around to test all the presidents before Obama we've had a one drop of blood black president long before him.
This is from the same source you cherry picked from:
Not only does the one-drop rule apply to no other group than American blacks, but apparently the rule is unique in that it is found only in the United States and not in any other nation in the world. In fact, definitions of who is black vary quite sharply from country to country, and for this reason people in other countries often express consternation about our definition. James Baldwin relates a revealing incident that occurred in 1956 at the Conference of Negro-African Writers and Artists held in Paris. The head of the delegation of writers and artists from the United States was John Davis. The French chairperson introduced Davis and then asked him why he considered himself Negro, since he certainly did not look like one. Baldwin wrote, "He is a Negro, of course, from the remarkable legal point of view which obtains in the United States, but more importantly, as he tried to make clear to his interlocutor, he was a Negro by choice and by depth of involvement--by experience, in fact."
----Oh, and let me add...I think you unwittingly did something here. How have blacks been characterized in this country? Not well. Less than whites. This is a disparaging definition to say that ANYONE with a single drop is black relegating them to status of less than a white. As in...a little leaven leavens the whole lump. Pretty sad. Sadder that you chose this to try and prove your point.