Come on. Can you blame 'em? Really? The anus-in-chief is bowing and scraping to the king of Saudi Arabia, the supposed head of the muslim religion; he talks fondly in one of his two autobiographies about hearing the muslim call to prayer in Indonesia; the guy came out in favor of the savage religion victory mosque at the WTC site (at least, before he was against it) and he's named after the legendary beast, the barak, which carried Mohammed on a tour of heaven!
Furthermore he attended--for twenty years--a church led by a pastor who loves Louis Farrakhan and his islamic crew of shitheads. Reverend Wright gave Farrakhan the Reverend-whatever-Wright award for something-or-other! So his pastor of two decades was obviously in love with islam himself, particularly since he certainly didn't seem to understand the tenets of Christianity all that well. (Christ was black and homeless? Did you actually read the Bible, Reverend Wright, or did you get your religion from Democrat press releases?)
...I was going to look up the specifics of that award, but I decided that I prefer to use my ever-declining number of functioning brain cells on storing some useful information. Like the lyrics to "My Sharona" or something.
Besides all that, the only proof we have that Obama is not muslim is his own word for it.