Katsiaryna Bartko, a 33-year-old Belarusian thyroid cancer survivor, has been held by ICE since early June 2026, most recently at the CoreCivic-run Midwest Regional Reception Center in Leavenworth, Kansas. She requires daily hormone medication and calcium supplements for permanent hypoparathyroidism and chronic hypocalcemia following cancer surgery, but her partner, Dmitry Shyshov, says she was initially denied her prescribed medications despite intake records documenting her needs. She was hospitalized three times in four days, once in acute distress requiring intravenous calcium, and lab records showed her thyroid-stimulating hormone soaring to over 31 times normal. A Harvard endocrinologist and an independent physician with Physicians for Human Rights both warned her continued detention is medically unsafe, risking organ failure, coma, or death. Bartko entered the U.S. legally on an F-1 student visa in March 2022 and filed for asylum in 2023, citing persecution over her pro-democracy activism and opposition to Russia's invasion of Ukraine; she was detained in Florida after local domestic battery charges against her were dropped and has never been convicted of a crime. She was placed in solitary isolation days before a federal court hearing, and a judge has ordered the government to bring her to a Kansas City courthouse to hear her petition for release.