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A two-wave death story: fentanyl overdoses in the US, bullets in Mexico

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  • Cruz, Iván López
  • Torrens, Gustavo

Abstract

We establish a link between the fentanyl crisis in the US starting in 2013 and a second wave of drug-related violence in Mexico. We argue that the demand for fentanyl from the US pushed emerging Pacific-based Mexican drug trafficking organizations to reoptimize their trafficking routes, leading to new clashes and violence, often in locations barely affected by the first wave of violence caused by the 2007 Mexican War on Drugs. Exploiting the differential impact that the Mexican War on Drugs and the demand of fentanyl had on different municipalities, we estimate that fentanyl caused about 20 additional homicides per 100,000 inhabitants.

Suggested Citation

  • Cruz, Iván López & Torrens, Gustavo, 2026. "A two-wave death story: fentanyl overdoses in the US, bullets in Mexico," Journal of Development Economics, Elsevier, vol. 178(C).
  • Handle: RePEc:eee:deveco:v:178:y:2026:i:c:s0304387825000938
    DOI: 10.1016/j.jdeveco.2025.103542
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    1. Corinna K. Hamilton, 2021. "America’s Failing Trade War With China: A Focus on Fentanyl," American Journal of Trade and Policy, Asian Business Consortium, vol. 8(1), pages 59-70.
    2. Ivan Lopez Cruz & Gustavo Torrens, 2019. "The paradox of power revisited: internal and external conflict," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 68(2), pages 421-460, September.
    3. Goodman-Bacon, Andrew, 2021. "Difference-in-differences with variation in treatment timing," Journal of Econometrics, Elsevier, vol. 225(2), pages 254-277.
    4. Mario Fiorini & Wooyong Lee & Gregor Pfeifer & Gregor-Gabriel Pfeifer, 2024. "A Simple Approach to Staggered Difference-in-Differences in the Presence of Spillovers," CESifo Working Paper Series 11011, CESifo.
    5. Herrera, Joel Salvador & Martinez-Alvarez, Cesar B., 2022. "Diversifying violence: Mining, export-agriculture, and criminal governance in Mexico," World Development, Elsevier, vol. 151(C).
    6. Juan Camilo Castillo & Daniel Mejía & Pascual Restrepo, 2020. "Scarcity without Leviathan: The Violent Effects of Cocaine Supply Shortages in the Mexican Drug War," The Review of Economics and Statistics, MIT Press, vol. 102(2), pages 269-286, May.
    7. Kirill Borusyak & Xavier Jaravel & Jann Spiess, 2024. "Revisiting Event-Study Designs: Robust and Efficient Estimation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 91(6), pages 3253-3285.
    8. Alberto Abadie, 2005. "Semiparametric Difference-in-Differences Estimators," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 72(1), pages 1-19.
    9. Dmitry Arkhangelsky & Susan Athey & David A. Hirshberg & Guido W. Imbens & Stefan Wager, 2021. "Synthetic Difference-in-Differences," American Economic Review, American Economic Association, vol. 111(12), pages 4088-4118, December.
    10. Casey B. Mulligan, 2024. "Prices and Policies in Opioid Markets," Journal of Political Economy, University of Chicago Press, vol. 132(10), pages 3461-3499.
    11. Galiani, Sebastian & Lopez Cruz, Ivan & Torrens, Gustavo, 2018. "Stirring up a hornets’ nest: Geographic distribution of crime," Journal of Economic Behavior & Organization, Elsevier, vol. 152(C), pages 17-35.
    12. López Cruz, Iván & Torrens, Gustavo, 2023. "Hidden drivers of violence diffusion: Evidence from illegal oil siphoning in Mexico," Journal of Economic Behavior & Organization, Elsevier, vol. 206(C), pages 26-70.
    13. Giacomo Battiston & Gianmarco Daniele & Marco Le Moglie & Paolo Pinotti, 2022. "Fueling Organized Crime: The Mexican War on Drugs and Oil Thefts," "Marco Fanno" Working Papers 0286, Dipartimento di Scienze Economiche "Marco Fanno".
    14. Beatriz Manotas-Hidalgo & Fidel PeÌ rez SebastiaÌ n & Miguel AÌ ngel Campo-BescoÌ s, 2018. "Reexamining the Role of Income Shocks and Ethnic Cleavages on Social Conflict in Africa at the Cell level," HiCN Working Papers 285, Households in Conflict Network.
    15. Melissa Dell, 2015. "Trafficking Networks and the Mexican Drug War," American Economic Review, American Economic Association, vol. 105(6), pages 1738-1779, June.
    16. Kirill Borusyak & Peter Hull, 2023. "Nonrandom Exposure to Exogenous Shocks," Econometrica, Econometric Society, vol. 91(6), pages 2155-2185, November.
    17. Conley, T. G., 1999. "GMM estimation with cross sectional dependence," Journal of Econometrics, Elsevier, vol. 92(1), pages 1-45, September.
    18. Castiel Chen Zhuang, 2024. "A Way to Synthetic Triple Difference," Papers 2409.12353, arXiv.org, revised Sep 2024.
    19. Ashesh Rambachan & Jonathan Roth, 2023. "A More Credible Approach to Parallel Trends," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 90(5), pages 2555-2591.
    20. Emilio Depetris-Chauvin & Ömer Özakz., 2018. "The Origins of the Division of Labor in Pre-modern Times," Documentos de Trabajo 511, Instituto de Economia. Pontificia Universidad Católica de Chile..
    21. Daniele, Gianmarco & Le Moglie, Marco & Masera, Federico, 2023. "Pains, guns and moves: The effect of the U.S. opioid epidemic on Mexican migration," Journal of Development Economics, Elsevier, vol. 160(C).
    22. Gabriela Calderón & Gustavo Robles & Alberto Díaz-Cayeros & Beatriz Magaloni, 2015. "The Beheading of Criminal Organizations and the Dynamics of Violence in Mexico," Journal of Conflict Resolution, Peace Science Society (International), vol. 59(8), pages 1455-1485, December.
    23. Oeindrila Dube & Juan F. Vargas, 2013. "Commodity Price Shocks and Civil Conflict: Evidence from Colombia," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 80(4), pages 1384-1421.
    24. Alberto Abadie & Alexis Diamond & Jens Hainmueller, 2015. "Comparative Politics and the Synthetic Control Method," American Journal of Political Science, John Wiley & Sons, vol. 59(2), pages 495-510, February.
    25. Anja Benshaul-Tolonen, 2019. "Local Industrial Shocks and Infant Mortality," The Economic Journal, Royal Economic Society, vol. 129(620), pages 1561-1592.
    26. Callaway, Brantly & Sant’Anna, Pedro H.C., 2021. "Difference-in-Differences with multiple time periods," Journal of Econometrics, Elsevier, vol. 225(2), pages 200-230.
    27. Nicolas Berman & Mathieu Couttenier, 2015. "External Shocks, Internal Shots: The Geography of Civil Conflicts," The Review of Economics and Statistics, MIT Press, vol. 97(4), pages 758-776, October.
    28. Corinna K. Hamilton, 2021. "America’s Failing Trade War With China: A Focus on Fentanyl," American Journal of Trade and Policy, Asian Business Consortium, vol. 8(2), pages 171-182.
    29. Jonathan Roth & Pedro H. C. Sant'Anna, 2023. "When Is Parallel Trends Sensitive to Functional Form?," Econometrica, Econometric Society, vol. 91(2), pages 737-747, March.
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    JEL classification:

    • D74 - Microeconomics - - Analysis of Collective Decision-Making - - - Conflict; Conflict Resolution; Alliances; Revolutions
    • K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law
    • R12 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Size and Spatial Distributions of Regional Economic Activity; Interregional Trade (economic geography)

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