On September 29, 2017, President Trump signed Presidential Determination 2017-23140, an executive action that set the refugee admission ceiling for Fiscal Year 2018 at 45,000 individuals. This represented a dramatic reduction from the previous fiscal year's cap of 110,000—a cut of more than sixty percent implemented through the president's statutory authority to establish annual refugee admission levels. The determination took immediate effect and directly constrained the operational capacity of refugee resettlement agencies nationwide.

The practical consequences were substantial and measurable. While approximately 50,000 refugees had been admitted during FY2017, the new ceiling resulted in only 22,491 admissions in FY2018, nearly halving the previous year's intake despite the ceiling reduction of only 59 percent. This gap reflects the chilling effect the policy had on processing infrastructure and organizational capacity. Refugee families from Syria, Myanmar, Iraq, and other conflict regions experienced prolonged waiting periods or permanent denial of resettlement opportunities. Resettlement organizations that had built operational capacity to process applicants faced workforce contraction and reduced services.

This action established a pattern that would characterize the Trump administration's approach to immigration policy across multiple subsequent determinations and orders. The refugee ceiling reductions cascaded through a broader framework of immigration restriction policies, working in concert with detention practices, green card limitations, and enforcement operations documented in later years. The removal of the Immigration Detention Ombudsman's office and the no-bond detention policies created a system where vulnerable populations faced both reduced legal pathways to entry and reduced protections once in the country's custody. Even years later, federal courts would need to intervene to prevent deportations of refugee populations, suggesting the ceiling reductions had lasting consequences for individuals whose status remained uncertain.

The determination itself faced no immediate legal challenge, as presidential authority over refugee admissions is statutorily granted. However, it functioned as an opening move in a sustained campaign to restrict immigration across multiple categories and enforcement mechanisms that would later generate significant litigation and congressional scrutiny.