On January 27, 2017, President Trump issued Executive Order 13769, formally titled "Protecting the Nation From Foreign Terrorist Entry Into the United States," which suspended entry of citizens from Iraq, Syria, Iran, Libya, Somalia, Sudan, and Yemen for 90 days while simultaneously halting the refugee admissions program for 120 days. The order took effect immediately, affecting thousands of individuals already holding valid visas, refugees in the final stages of processing, and dual nationals from the affected countries who found themselves unable to travel or had existing plans abruptly canceled.

The practical consequences were immediate and sweeping. Families separated by borders were unable to reunite. Business professionals, students, and healthcare workers faced sudden visa cancellations. Refugees who had completed security vetting and been approved for resettlement were left in limbo, often in dangerous conditions in camps or transit countries. The order's broad application, lacking individual case-by-case review, meant that people with no connection to terrorism faced blanket entry bans based solely on their national origin.

This action represents the foundational policy from which subsequent immigration restrictions have flowed throughout the Trump administration. The targeting of specific nations combined with erosion of due process protections established a template that persists in later actions. The current administration continues this approach through attempts to eliminate Temporary Protected Status for 13 countries, closing oversight mechanisms like the Immigration Detention Ombudsman office that would have documented harms, and using immigration status against those exercising free speech rights. Each successive action removes another layer of scrutiny and procedural protection for vulnerable populations.

The order faced multiple legal challenges, with federal courts initially blocking implementation before the Supreme Court ultimately upheld a modified version in June 2017. The policy remained substantially in effect through the first Trump administration. President Biden reversed the order via Executive Order on his first day in office in January 2021, restoring visa processing and refugee admissions from the affected countries. However, the underlying legal precedent that the executive possesses broad authority to restrict immigration on national security grounds remains intact, making similar restrictions possible under future administrations.