Donald Trump’s success in the US elections came as a surprise to both pollsters and political pundits. And since November, both have peddled numerous theories to explain their mistakes. Yet, one aspect of his electoral victory remains underappreciated: labour mobility. Labour mobility across regions is much higher in the United States compared to many other countries in the world, including the European Union members, allocating individuals into the jobs where they are the most productive. As such, mobility is an important factor for upward social mobility for middle class Americans, where they can increase their earnings and their life standards …

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