One in five inmates in federal prison are foreign-born, of which 92 percent are unlawfully present in the United States, according to a recently released report.

The report, produced jointly by the Department of Homeland Security and Department of Justice, shows that of 58,766 “known or suspected aliens” in custody between the Bureau of Prisons and United States Marshal facilities, 37,557 are confirmed non-citizens. Of that number, 35,334 (a full 94 percent) were illegally present in the United States. It’s worth noting that DHS data returns are incomplete, because state prisons and local jails, where nearly 90 percent of the U.S. incarcerated population is held, do not routinely provide such data to the federal government.