TY - JOUR T1 - Post-9/11 U.S. Homeland Security Policy Changes and Challenges: A Policy Impact Assessment of the Mexican Front JO - Norteamérica. Revista Académica del CISAN-UNAM T2 - AU - Ramírez Partida,Héctor R. SN - 18703550 M3 - 10.1016/S1870-3550(14)70113-2 DO - 10.1016/S1870-3550(14)70113-2 UR - https://www.elsevier.es/es-revista-norteamerica-revista-academica-del-cisan-unam-84-articulo-post-9-11-u-s-homeland-security-policy-S1870355014701132 AB - This article assesses U.S. security policy on U.S.-Mexico land ports of entry, before and after 9/11. It tracks U.S. security policy’s impact over time by using multiple interrupted time-series (mit) and yearly time-series of border activity measures from 1994 to 2009. The results demonstrate that, other things being equal, post-9/11 U.S. security policy changes had marginal effects; in other words, policy responses make no difference when their performance is compared on, before, and after 9/11; thus, U.S.-Mexico economic integration may be a stronger determinant of security at U.S.-Mexico land ports of entry. ER -