Interestingly some commentators are saying the the division appears to be along the same lines as Brexit.
I'm not at all surprised by that, Dinahmo. This whole sorry saga, with Braverman in the Sun promising its readers that millions of people are falling over themselves to come to the UK, compounded by her upping the number to billions the next day in an interview, and Sunak repeating the same numbers at PMQs yesterday, is strongly reminiscent of the Leave campaign.
You know, with Farage standing in front of that poster (which had nothing to do with the UK or the EU) implying that all those brown people wanted to swamp the UK, and the dark ads about Turkey just about to join the EU, implying a swamping of Turkish origin, plus the ones with arrows pointing from inaccurately placed middle eastern countries, also implying that their citizens were all about to rush over to the UK...
They were very effective, so why not try the same thing again?