If you doubt that Obama is President or deny that he is a citizen, then you are living in a different world than I am.
You said you know that Obama is a US citizen with a US passport. You can only say that by blind faith, because all the documentation for anything of that sort has been manipulated and/or forged, which is an admission that something is wrong.
If you truly believe that Obama is a US citizen with a US passport, you are believing in spite of consistent evidence to the contrary.