Okay, why do people say Barack Obama is the AntiChrist?

I have met many people more Anti-Christian than he is, not that I'm happy about that, but I'm just saying that I have met people that are genuinely capable of being the Anti-Christ for their wicked nature and Barack Obama doesn't fit the criteria of that character. He even has said God bless you in his edicts. So, why are people maligning and slandering him like this?