Illegal Immigration, State Law, and Deterrence

Working Paper: NBER ID: w20801

Authors: Mark Hoekstra; Sandra Orozco-Aleman

Abstract: A critical immigration policy question is whether state and federal policy can deter undocumented workers from entering the U.S. We examine whether Arizona SB 1070, arguably the most restrictive and controversial state immigration law ever passed, deterred entry into Arizona. We do so by exploiting a unique data set from a survey of undocumented workers passing through Mexican border towns on their way to the U.S. Results indicate the bill’s passage reduced the flow of undocumented immigrants into Arizona by 30 to 70 percent, suggesting that undocumented workers from Mexico are responsive to changes in state immigration policy. In contrast, we find no evidence that the law induced undocumented immigrants already in Arizona to return to Mexico.

Keywords: illegal immigration; state law; deterrence

JEL Codes: J6; K37


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Arizona SB 1070 (K37)immigration flows (F22)
federal injunction (L49)immigration flows (F22)
Arizona SB 1070 (K37)return to Mexico (F24)
state legal climates (K32)locational decisions of new immigrants (J61)
Arizona SB 1070 (K37)undocumented immigrants entering Arizona (K37)

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