The population of _all_ of Arizona is only 7.2 million. Just within 100km of Dresden you've got 5 million. Add in a much easier, faster immigration policy (esepcially from the rest of Europe) and a higher (although still not high) unemployment rate and they're probably gonna have an easier time of it than Arizone does.
Not sure how the state population is relevant, the vast majority of people living in Arizona live in the Phoenix metropolitan area which is where these new fabs are being built. The population size for that area is also around 5 million. Also, how is immigration between countries in Europe easier than immigration between states in the US. That is simply not possible when the US has no language/cultural barriers.
