"And when it is said to them, `Believe as other people have believed,' they say, `Shall we believe as the fools have believed ?' Remember ! it is surely they that are the fools, but they do not know." THE HOLY QUR'AN
This link for criticism of a president who follows Islam.
Exodus: 80 The multitude of the children of Israel... offered first-fruits to the lord with a most ready and devout mind.