John, I subtracted 1619 from 2007.

I'll give you that point.

Re: Black people writing books and/or being on talk shows saying that Obama isn't "really" African American, for some money and power, among other incentives, you can always find somebody to say anything.

My sense is that this "Is Obama really black? question is a politically manufactored hatchet job. I think that Republicans know that regardless who the Democratic candidate is, most Black people will vote for him or her, as oppossed to voting for the Republican candidate. But if the Republicans can peel off some votes from the "Black voting block", then they would have succeeded in the goal of that "Obama's not really black" campaign.

And fwiw, it's too soon for me to decide which Democratic primary candidate I will support.