What would you change if you could? The EU already offers freedom of movement to EU citizens. Of course the US being a country instead of a connection of countries offers a more streamlined experience and surely the shared language plays a huge role too. But when I want to come up with examples such as a Greek person having completely different retirement, health care and legal schemes in Sweden compared to Greece, it seems the US is not so dissimilar there either given that states sometimes have very different approaches to health care, taxes, labor laws, etc.
