I have for a long time...it's in the Constitution...you know...that document Washington presided over the creation of...?
Actually Keith it's not in the Constitution and until the 14th Amendment, states had the right to establish their official churches and require leaders to be not only of a certain moral character but also testify to the belief in God Almighty(check some of the state constitutions i.e. Missouri, Maryland, North Carolina, etc)
Secondly this very article and some of the commentary is the exact reason that we were never supposed to vote directly for POTUS. At one time, we were a Republic and not a democracy as established by said Constitution.