So exactly what measures do you propose the Guides implement?  Tell the girls that "you can all sign up but if you're stopped at the border 'Tough'"?  Or if you get detained for hours don't expect us to wait for you?

And the same thing applies to the adult chaperones - if you've been following the news, a high school math teacher was prevented from accompanying his students on a trip they were taking to the US.

So, rather than simply say "they should do something" please tell us what they should do.  Or admit that you have no idea.