If You do it the Way the Law Says, how are You Breaking the Law?

   The thought is, if the caravan migrants crawl over the fence, instead of through an open gate, they are coming illegally.
   Are they? Is this true?
   I think on how national and international law says one of the ways of applying for asylum is to present yourself upon entry, and to ask for that asylum at that time.
   If the process says that is the way you do it, how is it illegal? If the law says do it this way, and you do it that way, how are you breaking the law?
  Perhaps I need to find the actual text for the national and international laws. Perhaps that would clear it up for me. Maybe the laws specify or indicate you cannot crawl over a wall or a fence or a gate.