By Physicians for Human Rights
The United States maintains the world’s largest immigration detention system, detaining an average daily population of nearly 60,000 people in immigration detention.¹ U.S. Immigration and Customs Enforcement (ICE) detains people in a network of facilities across the country where they often endure inhuman conditions, including solitary confinement.² Solitary confinement is the practice of isolating people in small cells without meaningful human contact for 22 hours or more per day.³
Over the past decade, the use of solitary confinement in immigration detention has risen at an alarming rate, with unprecedented numbers of immigrants held in isolation.⁴ Congress recently authorized a significant increase in funding to expand immigration detention, which will likely exacerbate this widespread, prolonged use of solitary confinement as detention capacity increases.⁵
The effects of prolonged solitary confinement can be lethal, as in the case of Charles Leo Daniel, who died after spending more than 13 years of his life in solitary confinement in various detention settings, including almost four years in solitary confinement in ICE detention.⁶ The adverse health effects of solitary confinement are well-established, extensively researched, and thoroughly documented across decades of literature,⁷ including post-traumatic stress disorder, self-harm, elevated suicide risks, lasting brain damage, and hallucinations.⁸ These effects often persist beyond the confinement period, resulting in enduring physical and psychological disabilities, especially among people with preexisting medical and mental health conditions.⁹ Vulnerable populations, including those with medical and mental health conditions, are often subjected to solitary confinement at high rates despite ICE’s own directives mandating its use as a last resort.
New York: Physicians for Human Rights, 2025. 21p.