Your "full secondary check" wouldn't stop someone arriving at a UK port with a fake EU paper ID and then claiming asylum.This could easily have been solved by simply requiring more detailed checks at the border to cater for the handful of people still using them.
Indeed. The UK is part of a tiny club that includes Russia, Ukraine and Belarus as not accepting EU ID cards, which is just bonkers. The only real threat came from paper ID cards, which could easily be dealt with by making it clear that anyone using it would be subjected to a full secondary check.
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The EU would not permit selective acceptance of ID cards.I suspect it appealed to a certain type of voter
An immigration officer told me that corruption in two specific EU countries (Lithuania and Bulgaria) meant ID cards could be purchased (usually by Russians and Belarussians) for €1000 or so. I suggested at the time that perhaps then we don't accept ID cards from these countries? Hardly rocket science.
Oh and there were media reports a few years ago about bulk thefts of blank ID cards from local government premises in Italy.