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684 Annals Am. Acad. Pol. & Soc. Sci. 6 (2019)

handle is hein.cow/anamacp0684 and id is 1 raw text is: Debacles on the
Border: Five
Decades of
Fact-Free
Immigration
Policy
By
JORGE DURAND
and
DOUGLAS S. MASSEY

Since 1987, the Mexican Migration Project (MMP) has
compiled extensive data on the characteristics and
behavior of documented and undocumented migrants
to the United States, and made them publicly available
to users to test theories of international migration and
evaluate U.S. immigration and border policies. Findings
based on these data have been plentiful, but have also
routinely been ignored by political leaders, who instead
continue to pursue policies with widely documented,
counterproductive effects. In this article, we review
prior studies based on MMP data to document these
effects. We also use official statistics to document cir-
cumstances on the border today, and draw on articles in
this volume to underscore the huge gap between U.S.
policies and the realities of immigration. Despite that
net positive undocumented Mexican migration to the
United States ended more than a decade ago, the
Trump administration continues to demand the con-
struction of a border wall and persists in treating
Central American arrivals as criminals rather than asy-
lum seekers, thus transforming what is essentially a
humanitarian problem into an immigration crisis.
Keywords: migration; undocumented    migration;
immigration policy; border enforcement;
deportations; border wall; Mexico; Central
America
or more than three decades, the Mexican
Migration Project (MMP) has annually
gathered data on documented and undocu-
mented migration to the United States from
random samples of households in sending com-
munities located throughout Mexico and from
purposive samples in U.S. destination areas.1
Over the years, the project has compiled an
extensive database of qualitative and quantita-
tive data on patterns and processes of Mexico-
U.S. migration. These data have been shown to
provide valid and reliable information on pat-
terns and processes of Mexican migration to
Correspondence: dmassey@princeton.edu
DOI: 10.1177/0002716219857647

ANNALS, AAPSS, 684, July 2019

6

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