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.
Supone la demolición completa de nuestras fronteras, dando rienda suelta al crimen organizado y a la inmigración ilegal sin que haya fronteras externas impermeables, que se suponía eran la piedra angular del conjunto del sistema, que puedan controlar esto.