Obama was going to a church before he was elected. Jeremiah Wright controversy was one of the significant talking points in the 2008 campaign that Hillary and McCain tried using against him. Obama and Michelle were married in a church. Which also reminds me, if I think Obama a Christian, but poorly, I think Michelle was a Christian and fairly strongly and I think she at least keep him going. Nevertheless being a member of the churches of stone don't make anyone a Christian. I mean come on now, the leaders of the stone churches killed Jesus!
Reading the Koran don't make you a muslim, I've read and I can tell you verily many a muslims in my debates with them have threatened me with fatwas and other vain wind threats that I laughed at. I am not sure if you have read it or not as you know much about Islam, but if you have I don't think you a muslim either.
As for his upbringing yea that's what I meaning he was begotten of a muslim, abandoned by him, raised with another muslim in a muslim country, abandoned of him too. He had his mom too whom he loved a lot and she was an atheist. I'd be more convinced he'd tend towards hers more if he is not a Christian. Though don't forget his grandma, she was a Christian and she is the real bedrock of his whirlwind early life. His grandma dying just before the 2008 election, that was a big deal too.
Obama's no longer president, so it don't matter too much, but I will hold hope he is a Christian even if a weak one, and who knows, maybe in his post-presidency he can go further into that. Obama may still prove useful to both myself, my people the Americans, even the foreigners, and of course God still even though he is no longer under the yoke of the American government, which is very secularistic, even the most secularistic than any other nation in this entire world and this current time. He had some secularistic traits indeed, and so does Trump, it comes with the job unfortunately.