Big Al there may be a point about the movement of goods but this back door for people getting into Britain idea doesn't really make sense. Why would say a Polish person fly to Dublin, then get a train to Northern Ireland, then either sail or fly to mainland Britain - when they can just fly straight to Britain or come through the Tunnel. Anyone from Europe can come on holiday anyway! Why would they need to come in via Ireland first. We surely aren't going to stop people visiting us? The issue is who is going to be able to work and claim benefits etc - not how they enter!