A 3-year-old immigrant child traveling from Texas to Chicago seeking asylum died in southern Illinois.
The Illinois Department of Public Health confirmed her death, though her name remains undisclosed.
The child was traveling with her parents on a bus departing from Brownsville, Texas.
The child had health concerns; the bus stopped, and 911 was called for emergency assistance.
Paramedics provided treatment before she was taken to a hospital in Marion County.
The bus was part of a "border bus mission" heading to Chicago, according to Texas officials.
Republican governors, including Greg Abbott, have sent migrants to Democratic-run cities.
California's Attorney General Rob Bonta criticized the practice as "immoral and disgusting."