Counterexamples to Obama being a Muslim
Barack Obama has been seen eating pork (Spam) and drinking alcohol. [1][2] Very few Muslims eat pork and drink alcohol as the Koran does not permit it (Koran 2:173; 2:219; 5:90-91; 6:118-119,121).
Obama and the Obama administration has aggressively promoted the homosexual agenda via public policy and public statements. There is not a single Muslim country in the world that permits the homosexual agenda to be promoted.
For many years, Obama attended a liberal Christianity church of a liberal Protestant variety which taught liberation theology. His daughter was baptised in this church.
Obama is a liberal. Liberals often practice religious syncretism and are often universalists (or near universalists) who believe that there are many religious roads to heaven and few if any people go to Hell. So while Obama may be sympathetic to Islam due to his upbringing as a child, this does not necessarily mean he is a Muslim.
There is significant conflict between atheism and Islam and Islamic governments imprison/censure atheists and Islamic zealots kill atheists (see: Atheism vs. Islam). Muslims generally have a very low opinion of atheism. The Obama administration is the first administration to met with an atheist group. It meet with the Secular Coalition for America which is a coalition which represents the American Atheists, the American Humanist Association, and the Military Association of Atheists and Freethinkers.[3]