Immigration policy shocks and infant health

Area of Science:

• Public Health
• Health Economics
• Sociology

Background:

• Immigration policies significantly impact public health, particularly vulnerable populations like foreign-born mothers.
• Understanding the differential effects of immigration policy shifts on infant health is crucial for evidence-based policymaking.
• Previous research has not fully elucidated the causal links between specific immigration policy changes and infant health metrics.

Purpose of the Study:

• To evaluate the impact of positive and negative immigration policy shocks on infant health outcomes in the U.S.
• To analyze changes in mean birth weight and the incidence of low birth weight (LBW) following major immigration policy events.
• To differentiate the effects of pro-immigrant versus enforcement-focused immigration policies.

Main Methods:

• Utilized a triple difference approach to compare birth outcomes.
• Analyzed data at the Metropolitan Statistical Area (MSA) level, comparing foreign-born and U.S.-born mothers.
• Examined changes before and after the 1986 Immigration Reform Act (IRCA) and increased Immigration and Customs Enforcement (ICE) arrests in 2017.

Main Results:

• Higher IRCA applications correlated with increased mean birth weight and decreased LBW incidence (3-6%) for foreign-born mothers.
• Increased ICE arrests correlated with decreased mean birth weight and increased LBW incidence (3-7%) for foreign-born mothers.
• Negative effects of ICE arrests were more pronounced for mothers from Latin and Central American countries, with LBW increasing up to 12% for Hispanic mothers.

Conclusions:

• Immigration policies have a direct and measurable impact on infant health outcomes.
• Pro-immigrant policies appear to benefit infant health, while stricter enforcement policies pose risks.
• Targeted interventions and supportive policies are needed for vulnerable immigrant populations to mitigate adverse health effects.