BO never mentions his Baptism ?
Baptism does not appear to be a requirement to join this 'church' - muslims 'accept' Jesus as a prophet superseded by mohammad.
http://www.answering-islam.org/Intro/islamic_jesus.html
The Quran
Isa, was a prophet of Islam
Jesus true name, according to the Quran, was Isa. His message was pure Islam, surrender to Allah. (Âl ‘Imran 3:84) Like all the Muslim prophets before him, and like Muhammad after him, Isa was a lawgiver, and Christians should submit to his law. (Âl ‘Imran 3:50; Al-Maidah 5:48) Isas original disciples were also true Muslims, for they said We believe. Bear witness that we have surrendered. We are Muslims. (Al-Maidah 5:111)