Each year, authorities count the number of people encountered while attempting to enter without authorization. These encounters do not capture every person who crosses, but they offer the most direct measure available for tracking trends and enforcement outcomes.
Because definitions, data sources, and reporting schedules vary, the widely cited figures for unauthorized entries can differ across agencies and years. Below is a structured snapshot of how these crossings are measured and how the counts have shifted over recent decades.
| Year | Border Patrol Apprehensions (Unauthorized Entries) | ICE Removals (Total) | CBP Expeditions and Turnbacks | Key Policy Context |
|---|---|---|---|---|
| 2010 | 1,647,569 | 228,421 | 379,331 | Heightened interior enforcement and return-focused operations |
| 2014 | 689,773 | 315,943 | 659,724 | Family unit arrivals rise; surge-focused processing protocols |
| 2019 | 857,048 | 269,395 | 1,028,473 | Remain in Mexico and expanded port-of-entry restrictions |
| 2021 | 1,734,686 | 187,794 | 1,833,727 | Record encounters amid pandemic-related mobility shifts |
| 2023 | 2,484,399 | 210,389 | 2,209,788 | Title 42 expirations and new asylum policies |
Border Patrol Apprehensions and Direct Crossings
How Apprehensions Reflect Attempts and Outcomes
Border Patrol apprehensions represent the number of people encountered within the borders during a fiscal year. A rising apprehensions count often signals more attempts, but it can also reflect changes in deployment, technology, or routes used.
Why Some Crossings Are Not Counted
Not every unauthorized entry is detected or reported. Some individuals request asylum at ports of entry, while others remain in the interior after lawful entry, meaning the total number of unauthorized entries is higher than apprehensions alone.
Interior Enforcement and Removals
ICE Removals as a Measure of Interior Activity
ICE removals capture people who are arrested inside the country and formally removed. These numbers reflect interior enforcement priorities and do not directly indicate how many initially crossed the border without authorization.
Expedited Processes and Alternative Outcomes
Not all removals follow full immigration court proceedings. Expedited removal and return programs can increase removal counts while affecting how encounters and apprehensions are interpreted over time.
Policy Shifts and Operational Changes
How Legal and Administrative Changes Affect Trends
Policies such as metering, Remain in Mexico, Title 42, and asylum restrictions alter how and where people attempt to cross. These shifts are visible in year-to-year changes in apprehensions, expeditions, and removals.
Technology, Surveillance, and Data Gaps
Improved sensors, cameras, and aerial surveillance increase encounters, yet vast terrain remains unmonitored. Data systems can lag, and different agencies may use inconsistent definitions, complicating direct comparisons across years.
Key Takeaways and Recommendations
- Use multiple data sources, including apprehensions, removals, and expeditions, to understand border activity trends.
- Recognize that policy changes can quickly alter crossing patterns and reported numbers.
- Compare figures across years with consistent definitions and seasonal adjustments whenever possible.
- Pair quantitative data with context from local stakeholders to capture the full picture of border dynamics.
FAQ
Reader questions
What do Border Patrol apprehensions actually measure?
Apprehensions measure the number of people encountered by Border Patrol agents during attempted unauthorized entries, including repeat attempts and individuals encountered multiple times in a year.
Why might apprehensions rise even if fewer people try to cross initially?
Higher apprehensions can result from more agents in the field, better detection technology, or shifts in migrant routes into more visible areas, without necessarily indicating a higher number of initial attempts.
How are removals counted differently from apprehensions?
Removals count people formally taken out of the country after arrest, which can include individuals who crossed earlier, while apprehensions focus on encounters at or near the border during a specific period.
What causes large year-to-year swings in crossing data?
Large swings often stem from policy changes, legal rulings, economic conditions in sending countries, and operational decisions, all of which affect both migrant flows and how encounters are recorded.