I migrated from the UK to Aussie (both passports now).
When I did the move I had to fill in all sorts of forms including one confirming that I understood spitting on the street is not preferred in Australia.
I also had to have police checks both sides, have full medicals including an HIV test, produce birth certificates back to and including grandparents both sides, and produce my army honourable discharge. The Company I was working for had to also fill in forms, and sponsor my temporary 4 year long stay business visa. OH and ZERO access to benefits of any kind for four year I think. Fail on anything and no home in Aussie........After 2 years ish (thinking back hard now) I was able to apply for citizenship and get both passports for all (UK / Aussie).
The ONLY thing I ever had an issue with is that I had to have the balls chopped off my pure bred black labrador for him to join me. Maybe I could have looked harder, but his genes not being spread I considered criminal. I could have pimped him out here v easily, and made some money too whilst he smiled, LOL. I never bought him for money though:)
Joking apart I never had a problem with any of that, and I consider that properly controlling immigration. Differently I do not have a problem with offering asylum, but uncontrolled immigration is a recipe for hotbeds of radicalisation at best.
Dubya was not that bright and Blair just said yes without insisting on some end game. I doubt though it did more than expedite to a head what was coming long time from a basket case region. Conjecture, but could well be that the Bear and the Eagle unite (story there in itself) to do something in the region, and elsewhere it's onside and helping in an overt way from every good citizen, and if not why not and solve it.