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α: calibrated so average coauthorship-adjusted count equals average raw count
We study the effect of forced migration on public policy setting in the migrant-receiving country. After World War II, eight million expelled Germans arrived in West Germany within 5 years. We use regional variation in the population share of forced migrants across West German cities to estimate the effect of this inflow on cities’ taxation and spending decisions. To identify a causal effect, we pursue an instrumental variable strategy that leverages push factors of the expulsions while being orthogonal to local conditions in the destination regions. Our results show that cities with high inflows of forced migrants increased spending on welfare and education, decreased spending on infrastructure, raised local taxes, and incurred more debt. Part of these effects can be attributed to shifts in political preferences. The migrants held voting rights upon arrival and supported parties that explicitly catered to their interests and needs.