I have certainly not been a cost to the economy though now in my later years I daresay I will become one,they can take it out of what they have had from me, I am sure they will remain in profit.You'd think the simple fact that the graph shows that a typical non-migrant is "more" of a net cost would be a bit of an indicator that it's useless.
It's one of the odd things about the right wing - that so many are happy to think of themselves as a cost to the economy, grateful that the wealthy are supporting the rest of us (and I'm not suggesting this is @Hertzblue, but I do know other people who buy into it completely).
I said in my earlier reply that the data is limited but it is amusing that when the Treasury have maintained that migration is a net positive for the economy for the last 20 years, I have no doubt that the likes of yourself and Vic will have lapped that up. Now the same organisation about turns and says , ah well actually that might not be the case , your first reaction is to claim they must have got it wrong lol.
You appear to have a problem accepting that there is any negative aspects to mass immigration whether that be in terms of crime, economics or whatever regardless of the evidence . I have attached below a link to a recent Dutch study on the economics of migration to the Netherlands ( I did post it a while ago ) it is the best in terms of detail I have seen and is the sort of thing we need to do ourselves. It covers the economics of type of migrant , where they originate from , culture , quite illuminating. Something to get your teeth into.