Traders, Cops and Robbers
(495 K)
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NBER Working Paper No. 9572
Issued in March 2003
NBER Program(s): ITI
Why does illegal trade often flourish without formal enforcement, but sometimes fail? Why do illegal trade-reducing policies often fail? Why do States often appear to tolerate illegal trade? A model of trade with cops and robbers provides answers. `Safety in numbers' is a key element: the equilibrium probability of successful shipments is increasing in trade volume. Even without conventional fixed costs, safety in numbers implies scale economies which can explain the absence or robustness of trade subject to predation. Spilling over between markets, safety in numbers implies that illegal trade can foster legal trade and State revenue.
Published: Anderson, James E. & Bandiera, Oriana, 2006. "Traders, cops and robbers," Journal of International Economics, Elsevier, vol. 70(1), pages 197-215, September.
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