I'm from the South and I an attest that even rural areas have some melting pot that happens. The majority don't care about immigrates. A few do violence to them (getting to be less and less every year). The problem that continues to plague these Southern states is they still want a caste system with themselves above someone else. So all that happens is anyone with means leaves the state as soon as they can while the worst people get to continue trying to directly/indirectly enforce the caste system they have imagined.