Columbia subject headings:
Borderlands--Economic aspects--Mexico.
Geopolitics--Mexican-Guatemalan Border Region.
Mexican-Guatemalan Border Region--Economic conditions.
Mexican-Guatemalan Border Region--Emigration and immigration.
Mexican-Guatemalan Border Region--Social conditions.
Harvard subject headings:
Border security--Mexico.
Mexico--Boundaries.
Mexico--Emigration and immigration.
Princeton subject headings:
Border security--Mexico.
Mexico--Boundaries.
Mexico--Emigration and immigration.