The provision in the regulations is intended to deal with the actual point of reporting when they cross, but on an administrative basis the forms by which they will provide the information that's required will be made generally available, and they will be encouraged, where they know they're coming, to provide the information in advance so that at the actual point of crossing it can be handled quite quickly.
Les dispositions réglementaires concernent la déclaration au moment où l'on traverse la frontière mais, du point de vue administratif, les formulaires permettant de fournir les informations requises seront facilement accessibles. Les gens seront donc encouragés à fournir les informations à l'avance, afin de pouvoir franchir la frontière très rapidement quand ils arriveront.