Aaron McGlothin, union president at the Federal Correctional Institution at Mendota, stands in front of the prison during a protest against staffing shortages, near the prison entrance in Mendota, Calif., Monday, May 17, 2021. (AP Photo/Gary Kazanjian)

Aaron McGlothin, union president at the Federal Correctional Institution at Mendota, poses for a photo while leading a protest against staffing shortages, near the prison entrance in Mendota, Calif., Monday, May 17, 2021. (AP Photo/Gary Kazanjian)

Noni Ahulau, from Honolulu, along with others, protests staffing shortages at the Federal Correctional Institution at Mendota, Monday, May 17, 2021, near the facility, in Mendota, Calif. The signs being displayed and held, at right, show a picture of FCI Mendota Warden Douglas K. White. (AP Photo/Gary Kazanjian)

From left to right, George McCubbin, Nancy Rangel, Paul Millan, dressed as a clown, Mayor Rolando Castro, union president Aaron McGlothin and correctional Officer Steve Gardea protest staffing shortages near the entrance to the Federal Correctional Institution at Mendota, in Mendota, Calif., Monday, May 17, 2021. (AP Photo/Gary Kazanjian)

Special investigative services Lt. Armando Cervantes, right, films protesters at the Federal Correctional Institution at Mendota during a demonstration over staffing shortages, near the prison entrance in Mendota, Calif., Monday, May 17, 2021. (AP Photo/Gary Kazanjian)

Noni Ahulau, from Honolulu, holding a sign of Warden Douglas K. White, protests staffing shortages at the Federal Correctional Institution at Mendota, Monday, May 17, 2021, near the facility, in Mendota, Calif. (AP Photo/Gary Kazanjian)

Mayor Rolando Castro, far right, holds a protest sign with a photo of Douglas K. White, warden at the Federal Correctional Institution at Mendota, as fellow protester Paul Millan, dressed as a clown, looks on during a demonstration against staffing shortages, near the prison entrance in Mendota, Calif., Monday, May 17, 2021. (AP Photo/Gary Kazanjian)