The U.S would be a better place if things truly went south. Your nation still has a constitution which places value on personal liberties and freedoms and a people whose ancestors decided not to be slaves. The UK is a nation where freedom is simply an illusion, we have never had the right to free speech and our charters of rights such as the Magna Carta were only ever drawn up with the wealthy and privileged in mind. Not to be too cynical but I already live in a police state, hell I can't even carry a knife, and we have people going to prison for being 'mean' to other people on the internet. The British Empire fell and ever since the sixties we've been on borrowed time. I hope I'm wrong but I'd much rather be holed up in the Appalachians or the like right now.