every immigrant brings other 3-5 immigrants in about 15-20 yrs due to family sponsorship and those 15 -20 will bring other 100. let's not forget that. now multiply that with 12 millions. Australia and Canada are specifically benefiting right now because they invite skilled immigrants. you have to be engineer or doctor for so many years before you get points for that and they are very good at scrutinizing real ones from the fake ones. i think this great country is based on research and innovation and of course lots of hard labor behind that too. we definitely need hard labor but also need people who can think and innovate.