It's the rhetoric of politicians debating a new law by imagining  what effect it might have, like when Ronald Regan warned that the introduction of Medicare would lead to a socialist future  spent telling our children and our children's children what it once was like in America when men were free.
C'est la rhétorique  du politicien qui discute les effets d'une nouvelle loi comme Reagan qui mettait en garde  que l'adoption du Medicare amènerait un futur socialiste qui expliquerait aux enfants et aux petits-enfants comment c'était aux temps de l'homme libre aux États-Unis.