"....a country that is dominated by Christians........"
Sigaba, I must take you to task for quoting Clinton and then explaining what he meant

. We must first find out what "is" is.
Does he mean "Christians" in the broad sense of they believe in God but ain't very good at ever making it to church or "Christians" in the born again, burn 'em all sense?
If the first then this country is still dominated by Christians as we have Christians on both the left and the right. If the second then it would be a little more true.