Executive Order 13768, signed on January 25, 2017, established a sweeping federal enforcement framework that fundamentally altered immigration detention and deportation practices across the United States. The order directed the Department of Homeland Security to prioritize the apprehension and removal of immigrants convicted of crimes, those deemed security threats, and undocumented immigrants generally. Critically, it also empowered federal authorities to target sanctuary jurisdictions—cities and states that limit cooperation with ICE operations—by threatening to withhold federal grants, creating financial leverage to coerce local compliance with federal immigration enforcement.

The order's effects materialized rapidly and extensively. ICE conducted workplace raids that swept up both individuals with criminal convictions and those with no criminal history. Immigrants with pending legal cases found themselves detained without meaningful consideration of release conditions, a practice that would persist and intensify. Sanctuary jurisdictions that had developed policies protecting vulnerable populations faced genuine threats of federal funding cuts, though legal challenges would constrain the federal government's ability to enforce these threats. The detention expansion directly impacted thousands of immigrants held in ICE custody while their cases proceeded through the courts.

This executive order functioned as a foundational document for the Trump administration's broader immigration enforcement escalation. Subsequent policies built directly upon its framework: the detention without bond policies that federal appeals courts would later reject, the 2026 closure of the Immigration Detention Ombudsman office that investigated abuse claims, and the mask-ban litigation against New Jersey all emerged from or connected to enforcement priorities established here. The political speech restrictions applied to green card applicants similarly reflected the administration's expanding authority over immigration status based on compliance beyond statutory requirements.

Legal challenges emerged immediately. Courts blocked the grant-withholding provision that attempted to coerce sanctuary jurisdictions into cooperation, recognizing constitutional limits on federal spending conditions. More fundamentally, subsequent litigation over detention without bond and asylum protections revealed the tensions between the order's broad enforcement mandate and constitutional requirements for due process and statutory protections for refugees and asylees.