We show a causal impact of immigration on innovation and dynamism in US counties. To identify the causal impact of … recent decades. We show four main results. First, immigration has a positive impact on innovation, measured by the patenting … impact of immigration on innovation percolates over space, but spatial spillovers quickly die out with distance. Fourth, the …

The importance of knowledge spillovers for achieving innovation and economic growth is widely recognized. It is not … this controversy using a model of regional growth. The model also deals with the impact of local competition on innovation …