Measuring Geographic Migration Patterns Using Matrículas Consulares

Area of Science:

• Sociology
• Demography
• Migration Studies

Background:

• Existing data sources offer limited geographic detail on migrant origins and destinations.
• Household surveys often cover only fractions of locations or lack granular geographic information.
• Administrative data offers a comprehensive view of migration flows.

Purpose of the Study:

• To utilize Matrícula Consular de Alta Seguridad (MCAS) data for detailed measurement of Mexico-US migrant location distributions.
• To validate the representativeness of MCAS data against established household surveys.
• To demonstrate the utility of granular sub-state data in migration research.

Main Methods:

• Analysis of administrative data from the Matrícula Consular de Alta Seguridad (MCAS) program.
• Comparison of MCAS data distributions with Mexican and US household survey data.
• Statistical analysis of migration patterns in response to destination-specific policy changes.

Main Results:

• MCAS data show strong agreement with household surveys regarding migrant location distributions.
• Significant variations in migrant destinations exist even within the same Mexican source state.
• An Arizona law was associated with decreased emigration and increased return migration from linked Mexican regions.

Conclusions:

• MCAS administrative data provides a valuable, large-scale resource for understanding detailed binational migration patterns.
• Granular geographic data is crucial for identifying nuanced migration dynamics.
• Destination-specific policies can demonstrably influence migration flows and return migration.