You give his lie credibility and support by supporting it. If you believe his father is Barack Obama Senior, then he is only 6.25 percent Native African, which is the definition used for black. His father is from the Omani Arabs that migrated to East Africa.
You are avoiding reality....
The REALITY is he is teemed "black" by 95% of American's. And probably most of the world.
Although...LOL!!...many of the world would view him first as a Muslim...secondly as a black man. Isn't that just wonderful......./s