There also seem to be some who are trying to muddle the clear differences between Obama and McCain on the separation of church and state.
McCain said (9-2007) "the Constitution established the United States of America as a Christian nation". When immigrants come here "they know they are in a nation founded on Christian principles".
Source: Pew Center
Obama's views are rather different, as indicated already in this thread.
Anybody thinking of not supporting Obama should research further what McCain believes on this issue.