It means the complete demolition of our borders, giving free rein to organised crime and illegal immigration without there being any watertight external borders – which were supposed to be the cornerstone of the whole system – to keep this in check.
Significa a completa demolição das nossas fronteiras, dando rédea livre à criminalidade organizada e à imigração ilegal, sem que, em contrapartida, existam quaisquer fronteiras externas estanques - que deveriam constituir a pedra angular de todo o sistema.