Skip to content

We envision a nation where immigrants are embraced, communities are enriched, and justice prevails for all.

Sign Up Donate Now
logo
  • About Us

    About Us

    • Our Impact
    • Initiatives
    • Theory of Change
    • Financial Information
  • Immigration Topics

    Immigration Topics

    • Immigration 101
    • How Immigration System Works
    • History of Immigration
    • Birthright Citizenship
    • Demographics
    • Immigration and Crime
    • Immigration Reform
    • Immigration at the Border
    • Refugees + Asylum Seekers
    • Work Authorization
    • Economic Impact
    • The Legal System
    • Civic Engagement
    • Immigration Benefits and Relief
    • Business and the Workforce
    • Industries
    • Full Topic List
  • Tools & Resources

    Tools & Resources

    • Immigration News
    • For Attorneys
      • Practice Advisories
      • Amicus Briefs
      • Litigation
    • For Policymakers
      • Restoring Credibility and Humanity: A New Framework for Immigration Enforcement
      • Map the Impact
      • Immigration Where You Live
    • For Business Leaders
      • Global Talent Chamber Network
      • New American Fortune 500
      • J-1 Cultural Exchange Program
      • Civic Health Alliance Toolkit
    • For Advocates
      • Take Action
      • Volunteer
      • The Belonging Barometer
    • For Press
      • Sign Up for Media Updates
      • Press Releases
      • Stories
  • J-1 Visa Sponsorship Services
  • Building Connection

    Building Connection

    • Center for Inclusion & Belonging
    • Belonging Barometer
    • Creative Writing Contest
    • What Immigration Issues Do Americans Hold Sacred?
    • Storytelling
    • Belonging Begins With Us
  • Ways to Help

    Ways to Help

    • Volunteer
    • Fundraise For Immigrants
    • Corporate Partnerships
    • Institutional Donors
    • Events
    • Donate Today
    • Contact Us

We envision a nation where immigrants are embraced, communities are enriched, and justice prevails for all.

Home / A Look Back at the Family Separation Policy

Data Analysis

Published: October 30, 2025

Share:

XFacebookLinkedInShare

Border Patrol data show additional inconsistencies in reporting. A spreadsheet with data on Border Patrol apprehensions between October 1, 2017, and October 27, 2018, shows the ages, nationalities, and genders of those apprehended; their family status (single adult, unaccompanied child, or family unit); and the sector where they were apprehended; whether they were separated from a family unit; and, for adults, if they were referred for prosecution. The following section summarizes some of the key findings from this dataset and highlights some inconsistencies in the data.

When Did Family Separations Start and End?

While email threads and other records make it clear that family separations occurred prior to the zero-tolerance policy, the data only begins to show separations from April 13, 2018, exactly one week after the zero-tolerance policy was announced. The data obtained through FOIA requests do not show a single family separation between October 1, 2017, and April 12, 2018, even though email chains and other agency documents consistently show that families were separated in smaller numbers then and during a pilot program in El Paso. The lack of separations in the dataset prior to this date suggests that Border Patrol was not keeping record of separated families at all.

Between April 13 and May 6, separations continue in low numbers, and spike once the zero-tolerance policy is implemented. However, the data also shows that family separations did not, in fact, end with the zero-tolerance policy, but instead continued in lower numbers.

Where Did Separations and Prosecutions Take Place?

Ninety-nine percent of family separations and prosecutions under zero-tolerance policy occurred at the southern border. However, one family was separated at the eastern Canadian border, in the Swanton Sector.

Use the interactive tool below to see where family separations occurred. Hover your mouse over each circle to get a breakdown of how many people were separated in a particular sector and what the prosecution rates were. Click the buttons to filter by different time periods.

Which Nationalities Were Most Likely To Be Separated?

Family separations mainly affected people from El Salvador, Guatemala, Honduras, and Mexico. Individuals from 85 different nationalities traveled to the border and were apprehended by Border Patrol during the zero-tolerance period. However, the overwhelming majority of family separations affected people from these four countries.

Family Separation – Nationalities by ZTP Phase

Pie area scales with total cases by nationalities. Hover for details; “Other” expands to show what’s inside.

What Was the Stated Reason for Family Separation?

The data shows ten listed reasons for separation, including “other (prosecuted).” Border Patrol failed to define this separation reason. Under the zero-tolerance policy, the separation reason for migrants was overwhelmingly listed as “other (prosecuted).” But once zero-tolerance policy ended, the number listed as “other” reduced dramatically.

Family Separation — Reasons by ZTP Phase

Pie area scales with total cases in each phase. Hover for details; “Misc.” expands to show what’s inside.

The dataset showcased many flaws in Border Patrol’s record-keeping of family separations.

An Interactive of the Full Dataset

On the link below, you can explore all the variables in the government’s family separation dataset and see how they changed over time.

See the Interactive
XFacebookLinkedInShare

Table of Contents

A Look Back at the Family Separation Policy
  • 1. Key Agencies & Players
  • 2. Family Separation Process
  • 3. Key Events Timeline
  • 4. The Press Highlighted Harms from Family Separation and Played a Key Role in the Government’s Response
  • 5. Challenges Compiling Data
  • 6. Data Analysis
  • 7. The Public’s Attempt at Oversight of Family Separations
  • 8. Final Takeaways
  • 9. Methodology
  • 10. Additional Resources
  • 11. Audio
Next: The Public’s Attempt at Oversight of Family Separations

← Previous Page
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
Next Page →

Map The Impact

Explore immigration data where you live

See the Data

Our Map the Impact tool has comprehensive coverage of more than 100 data points about immigrants and their contributions in all 50 states and the country overall. It continues to be widely cited in places ranging from Gov. Newsom’s declaration for California’s Immigrant Heritage Month to a Forbes article and PBS’ Two Cents series that targets millennials and Gen Z.

100+

datapoints about immigrants and their contributions

All gifts are matched dollar for dollar

No one should face the immigration system alone

Donate Today Make a Monthly Gift
logoimg

Expert analysis straight to your inbox every week

Thank you for signing up!

Stand up for immigrants. Stand with us.

Donate Now

Follow us for the latest analysis and news.

Instagram Bluesky YouTube
logo

202-507-7500

PMB2026
2001 L Street N.W., Suite 500
Washington, DC 20036

  • Charity Navigator Four-Star badge
  • Candid Platinum Transparency Seal
  • About Us
  • Tools & Resources
  • Our Impact
  • Building Connection
  • J-1 Cultural Exchange
  • Immigration Justice Campaign
  • Reports & Fact Sheets
  • Newsroom
  • Events
  • Careers
  • Financial Information
  • Contact
  • list_item.social_icon.alt
  • list_item.social_icon.alt
  • list_item.social_icon.alt
  • list_item.social_icon.alt
  • list_item.social_icon.alt
  • list_item.social_icon.alt

American Immigration Council is a 501(c)(3) not-for-profit organization. EIN number 52-1549711.
Privacy Policy
2026 © Copyright American Immigration Council. All rights reserved.