Let's pretend, for a moment, that you are a politician who really really wants to cut immigration but can't find a legal way to do it. The obvious alternative is to make Britain less attractive to immigrants.
So, what are the things that public rhetoric sees as attractive to immigrants? Well, jobs, obviously, the NHS, benefits, education...
So to practise they started at the bottom of the list. Can we make our education system less attractive - lets get Gove on that one. Tick.
Now the biggy- can we wreck job prospects, the Nhs and benefits all in one go??? Oooh - I've had a brilliant idea about how we might do that...
Job done.