I don't think Obama is a Muslim. He's more of a secular humanist with no faith in anything but himself and government.
I do think he's giving all this positive attention to Islam (i.e. the dinner honoring the start of Ramadan) to either:
Buy off the Muslims so they won't launch any terrorist attacks against the U.S. - at least while he is in office. What he can't seem to fathom is that showing weakness like that is only inviting more attacks.
Or, he is simply wanting to poke his finger in the eye of conservatives.
“Why Would Anyone Think Obama is a Muslim?”
I wouldn’t except for that pesky little interview where he said it. :)