[ethbr1]

> (and have the headache of figuring out just how to treat communications that cross the border of those two markets)

You could also ban the ability for UK citizens to have chats with EU citizens, which I imagine some of the kookier UK conservatives would love.

[atoav]

You could do that, but then you cut a whole mode of interaction between e.g. UK parents and their kids who study or live on the continent.

Either way this is a measure that (like many conservative talking points) sounds good on paper ("law and order"), but once it becomes reality it won't win you any prices, except negative ones.