<sod >The document leaked to The Guardian, says: âPut plainly, this means that, to be considered valuable to the country as a whole, immigration should benefit not just the migrants themselves but also make existing residents better off.< eod>< sod > The document leaked to The Guardian, says: "Put plainly, this means that, to be considered valuable to the country as a whole, immigration should benefit not just the migrants themselves but also make existing residents better off." The paper is not a reflection of the final system being adopted by the Government, accepting that some things will be left open to negotiation.< eod>