Re: trying to tell the British public
The UK having no border checks with Ireland but not being in a customs union with them means any other country in the world, without a bilateral agreement with the UK that states that they agree that the UK can have no border checks with Ireland, can legally challenge the UK and their complaint will be that the UK is discriminating against them in favour of Ireland.
What's so difficult to understand about that? Come on, use the power of logic. Or are your programs subcontracted out to cats walking across keyboards?