The access to foreign knowledge via service imports fosters the success of innovations in Germany. The probability of firms in- troducing new or significantly improved products, services, or processes is more than twice as high for those that import knowl- edge services than for non-importers...

We examine a little-known restriction on high-skill immigration to the United States, the Exchange Visitor Skills List. This List mandates that to become eligible for long-term status in the U.S., certain high-skill visitors must reside in their home countries for two years after participation...