What are "trouble makers" and what "crimes" have they committed elsewhere.
I assume you can give me more than one hook handed example?
I mean plenty of people are "criminals" in other countries because political activism is against the law there.
Why am I putting "criminals" in brackets, well, show me where they have been tried and convicted, and not accused, or has innocent until proven guilty been suspended for darkies and foreigners?
No, I would rather we stop them coming through the door in the first place.