Again, what report?
My guess is that you have misunderstood the news, and are now inventing you own narrative in order to support your misplaced outrage.
Yes my mistake, - editing a reply in a rush, I conflated my comments about the overall ease with which the report, (BBC amongst others) says an EHIC could be obtained with just an NHS number, with my suggestion that a non-EU national could use such an EHIC in an EU country that wasn't too insistent of a passport being available at the time of presenting. (I'm sure there are many, particularly away from tourist centres and potential users of the cards would soon know where they were.) I mentioned Eritreans as they seem to be flavour of the month amongst the most voiciferous anti-immigrant spokespersons. It could equally be a Syrian, Iraqi, or any of the sub-Saharan states from which migrants are coming.
If people could get an EHIC card 'by deceit', they would surely find it just as easy to get NHS treatment the same way.
They are just cards, hence they can travel easier than the people named on them.
If this was actually a big problem, I imagine that the Spanish government would have complained years ago. There are certainly British citizens, resident in Spain, who travel to the UK for NHS treatment. They would be eligible for Spanish EHIC cards. I would guess these far outnumber the phantom Eritreans you are talking about.
I doubt that Spain have suffered much from the loophole as their Hospitals frequently don't even accept genuine cards backed up with passports from tourists at their time of need. Today's news on the subject is that the UK is looking at tightening up the process, hence my title of the thread, rather than just another thread moaning about migrants. In my opening post I said:
"it is another example of sloppy processes for issuing formal documents"
and
"I would imagine we are now one step nearer to having government issued ID cards for welfare registration, employment application and other key services. ",
which I believe is becoming increasingly likely.
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Don't forget ID cards was a New Labour scheme which the Conservatives were strongly against.
Personally I didn't see the point of the New Labour scheme in the form it was done in that they would be issued alongside a passport not separately and if you applied for a passport you would get an ID card as well. However, I think ID cards could be useful as an optional alternative to passport.
My objection to ID cards as envisaged 10 years ago was that certain 'profiled' types of the population might one day be obliged to carry them in public places. A more likely implementation would be as proof of entitlement to services, e.g. health, welfare and most importantly, work.
The elephant in the room is the propensity of some small business employers to take on migrants who don't have clearance to work, and pay them wages way below the minimum wage.
I see in today's Torygraph that Cameron is being lampooned for saying that he will make the practice illegal, (it is already!). There are however, those on the right of the Government who would demand that these
entrepreneurs are the driving force of our economic recovery.

In the long term, enforcement of any employment law would be much easier if there was a reliable ID system in place.