Interpretation/upholding of ILR, on the other hand is a GB government policy choice and I don't see that it has much to do with Brexit.
It has everything to do with Brexit because the rights of EU citizens in the UK and UK citizens in the EU is now subject to negotiation (with the EU) after article 50 was triggered.
And remember it was the UK that chose to leave - we weren't kicked out!
And if you read my original post, the devil is in the detail - because ILTR is now ILTR with a time limit and restricted family rights!
Previously people of the EU could come and go as they wished, subject to conditions that the UK chose not to enforce!
I don't really understand why ILR can't be honoured for the sake of keeping law abiding families together
Then you don't understand what the function of the ECJ is (regarding EU citizens), and what the implications of reverting to UK jurisdiction are.
And as I have already mentioned, time constraints are to be imposed.
Thus 'law abiding families' (whatever that means) will have to plan very carefully how they live their lives when we finally leave.
I draw your attention to this article:
https://www.theguardian.com/politic...ildren-need-papers-to-stay-in-uk-after-brexit
"British nationality laws on acquisition of British citizenship were written long before the freedom of movement rules gave any EU citizen moving to another member state automatic right of permanent residence after a period of time."
Given that documentation over time can get lost/mislaid/destroyed, how many people could find themselves at risk of deportation from the only country they have ever lived in? And to where?
Not every family will have been as 'anal' as we have been over making sure we have kept all official documentation (however trivial) over the decades!
(something that was 'alien' to my partner at first due to her country being far more civilised, but a necessity learnt after years of living with UK bureaucratic incompetence/prejudice!)