I've seen Krugman twice, Mankiw twice, Cowen twice, besides the originators and myself.
Overall though, the blogger Tino @ super-economy hits it out of the park by hitting everyone over the head with a big data-stick (HTs: Steve Sailer, Isegoria, and Greg Mankiw). I have no idea whether the opposition will be able to respond at all.
Essentially, Tino Sanandaji takes Milton Friedman's response to a Scandinavian:
When a local economist told Milton Friedman “In Scandinavia we have no poverty”, he replied: “That’s interesting because in America among Scandinavians, we have no poverty, either.”And then he runs the numbers. The numbers are frighteningly powerful:
The GDP per capita for Americans from EU.15 is $53,000, compared to $33,500 for E.U15 itself. Those of European descent in America on average produce 58.6% more than they do in Europe.Roughly...the European system sucks compared to the American system for Europeans who moved here. Not surprising to anyone who's spent a lot of time in middle class Europe. They're a lot poorer than we are: (Britain, France, Belgium, Germany, the Netherlands is my personal experience in Europe, with the most time in Belgium). And we already knew that most other countries systems (all of Africa, Arabia, and Latin America as well as India, China, and the Slavic nations ) suck for locals. The only thing that even makes it look like there's a contest is that Africans in Africa and Latinos in their home countries are between poor and frighteningly poor ($500-$10K/y), while Africans and Latinos in the US are comparatively tremendously rich, but not as rich as American Swedes.
In essence...regardless of where you live, you'd have a better life if you moved to America. Economic system & growth rates >> everything else.
* >> is geek notation for "much larger than".