We compare winning and losing firms in lotteries for H-1B visas, matching administrative data on these lotteries to administrative tax data on U.S. firms and to approved U.S. patents. Winning one additional H-1B visa crowds out about 1.5 other workers at the firm. Additional H-1Bs have...

This paper uses Danish full population register data from 1995 to 2001 to analyze self-selection of migrants from Denmark. We find that Danish emigrants are more educated and have higher pre-emigration earnings than non-migrants. The earnings of emigrants are not higher only on average, but the...