In Islam, religion passes from father to child. His father named him Barack Hussein Obama. Only Muslim children were named Hussein. His step-father was also Muslim. Obama's half-sister Maya Soeteoro-Ng said "my whole family is Muslim".
Former classmate, Rony Amir, recalls the entire family as devout Muslims.

During Obam's time at a Catholic School, Franciscan Asisi Primary
School, during 1st through 3rd grades, he was listed as a Muslim on the registration forms.

Paul Watson of the LA Times discovered that Obama was listed as a Muslim at both schools he attended in Jakarta.

In Indonesia students only went to classes that accorded wiht their faith. In his book [i]Dreams of my Father, [/...

In Islam, religion passes from father to child. His father named him Barack Hussein Obama. Only Muslim children were named Hussein. His step-father was also Muslim. Obama's half-sister Maya Soeteoro-Ng said "my whole family is Muslim".
Former classmate, Rony Amir, recalls the entire family as devout Muslims.

During Obam's time at a Catholic School, Franciscan Asisi Primary
School, during 1st through 3rd grades, he was listed as a Muslim on the registration forms.

Paul Watson of the LA Times discovered that Obama was listed as a Muslim at both schools he attended in Jakarta.

In Indonesia students only went to classes that accorded wiht their faith. In his book Dreams of my Father, Obama recalled some episodes in his Koranic studies.

Obama says he did not practice Islam while living in Indonesia which suggests a Muslim Identity.

Of courese none of this has anything to do wiht his ability to be president of the US. But if he is hiding facts it certainly speaks to his honesty.

And another thing:

"Not only the act of apostasy is subject to certain conditions in order to be legally valid, but also with regard to the perpetrator (murtadd) specific qualifications have been laid down. He can perform a legally effective act of riddah [apostasy] only out of free will (ikhtiyar) at an adult age (bulugh), being compos mentis (`aqil [of sound mind]), and, as emphasized by the Malikite school, after his unambiguous and explicit adoption of Islam." [- p. 3][P. 2, n. 3: "It is equally stated that this Islam needs to be evident in both qawl [speech] and `amal [deed]; a person who embraced the faith by merely pronouncing the shahadah [...

And another thing:

"Not only the act of apostasy is subject to certain conditions in order to be legally valid, but also with regard to the perpetrator (murtadd) specific qualifications have been laid down. He can perform a legally effective act of riddah [apostasy] only out of free will (ikhtiyar) at an adult age (bulugh), being compos mentis (`aqil [of sound mind]), and, as emphasized by the Malikite school, after his unambiguous and explicit adoption of Islam." [- p. 3][P. 2, n. 3: "It is equally stated that this Islam needs to be evident in both qawl [speech] and `amal [deed]; a person who embraced the faith by merely pronouncing the shahadah [profession of faith] would not be considered qulified to perform a legally valid act of apostasy-- Cf. Mawwaq in the margin of Hattab, Mawahib al-Jalil, VI, pp. 279-80]"