Working papers

Ibanez, A.M., S Rozo and D Bahar. "Empowering Migrants: Impacts of a Migrant's Amnesty on Crime Reports"

Elevator pitch: We study local crime reports following a massive migratory amnesty process that provided temporary protected status to nearly 500,000 undocumented Venezuelans in Colombia in 2018. We find an increased in reports of sexual crimes and a reduction in reports of domestic violence. Complemented by anecdotical evidence, we interpret our results as evidence of female empowerment.Latest Online Version: IZA

Bahar, D., B Glennon and R Choudhury. "An Executive Order Worth $100 Billion: The Impact of an Immigration Ban's Announcement on Fortune 500 Firms' Valuation

Elevator Pitch: In the aftermath of the announcement of an Executive Order by President Trump on June 2020 restricting H, J and L visas for foreign workers, Fortune 500 companies lost about 0.45% of their valuation, which amounts to over $100 billion. The effect was concentrated on firms that have increased their reliance on H1B visas.Latest online version: NBERMedia and commentary: Forbes, The Independent, Brookings

Bahar D., R Choudhury and DY Kim. "Innovation on Wings: Flight connectedness and the diffusion of knowledge"

[Draft coming soon]Elevator pitch: Using a regression discontinuity, we study how the existence of non-stop flights between inventors affects the likelihood of global collaborations in patenting.

Bahar, D., R Choudhury, J Sappenfield and S Signorelli. "Migration Policy Reform and Global Collaborative Patenting within Multinational Firms: Causal Multi-country Evidence"

[Draft coming soon]Elevator pitch: We study changes in patterns of global innovation following hundreds of migration reforms across 15 countries. We find that reforms that ease the inflow of foreigners or of returning citizens results in higher cross-border patenting activity for multinational corporations.

Bahar, D., R Choudhury and E Miguelez. "Global Mobile Inventors"

[Draft coming soon]Elevator pitch: We study the growing phenomenon of Global Mobile Inventors (GMIs). GMIs are the most productive type of inventors and they play a crucial role in the development of new technologies in countries where they arrive, we find.


Bahar, D. 2009. "Aid and Fertility." Harvard CID Working Papers Series, no. 38.

Elevator pitch: I find that foreign aid increases fertility rates among countries, using as an instrumental variable natural disasters occuring in neighboring countries.[HKS working paper]