Jim,
The border was closed right up to a few decades ago - Britain being part of Europe opened it up and Britain's leaving has now threatened to close it

Not true. It was only a security border not a trade or tariff border.
It was opened by the ending of the troubles.

Ireland is full of European workers at present and they are all welcomed as an asset to the economy

Yes, here too.

Do you think the Xenophobes who voted for Brexit will be happy when Europeans from Ireland start crossing into the North and then into mainland Britain through an open Border?

Who cares what xenophobes think? Visitors from EU will always be welcome here.

That will be a betrayal of what they voted for - getting rid of foreigners

Who cares what xenophobes think. The rest of us did not vote for that.

Your mindless repetition of Europe forcing a closed border is reaching the point of imbecility

Sorry, but it is a fact that UK has declared it will not impose one but EU is threatening to.

BRITAIN HAS CHOSEN TO LEAVE EUROPE - IN DOING SO, THEY HAVE ABANDONED ANY CLAIM TO THE RIGHTS OF EUROPEAN MEMBERSHIP

Yes. Obviously.

AS OUTSIDERS, THEY ARE SUBJECT TO THE SAME FRONTIER LAWS AS ANY NON-MEMBER -
Yes, and none of them require border posts.

THE SAME LAWS THAT BRITAIN IMPOSES ON EVERY FOREIGN NATIONAL WISHING TO ENTER.

UK and Ireland both allow people from EU to enter and that will continue after Brexit, so it is not an issue.

Too many points at a time again Jim.