Obama recited the "Azaan", the Call to Prayer, in a New York Times interview with Nicholas Kristof in 2007.
The "Azaan" contains within it the profession of faith called the "Shehada", the recital of which makes one a Moslem in the eyes of the entire Moslem world. Obama knew that from his years in Jakarta with his stepfather and uncle, and his visits to the mosque there.
He recited that Moslem Confiteor with his eyes wide open.
That creates "doubt", Al.
What is a "white nationalist" in your lexicon?