Sisseton Man Sentenced to Almost 30 Years in Federal Prison for Assault with a Dangerous Weapon and Sexual Abuse of a Minor

ABERDEEN - United States Attorney Alison J. Ramsdell announced today that U.S. District Judge Charles B. Kornmann has sentenced a man from Sisseton, South Dakota, convicted of Assault with a Dangerous Weapon and Sexual Abuse of a Minor. The sentencing took place on August 26, 2025.

Chauncey Allen White, age 31, was sentenced to two years and eight months in federal prison, followed by three years of supervised release, and ordered to pay a special assessment to the Federal Crime Victims Fund in the amount of $100 on the Assault with a Dangerous Weapon charge.

White was sentenced to 26 years and eight months in federal prison, followed by five years of supervised release, and ordered to pay a special assessment to the Federal Crime Victims Fund in the amount of $200 on the Sexual Abuse of a Minor charge. Upon release from federal prison, White must register as a sex offender. White’s sentences are to be served consecutively, which amounts to 29 years and four months in federal prison.

White was indicted by a federal grand jury for Assault with a Dangerous Weapon in March 2024. He was indicted by a federal grand jury for Sexual Abuse of a Minor in July 2024. White pleaded guilty to Assault with a Dangerous Weapon on November 18, 2024. He pleaded guilty to Sexual Abuse of a Minor on June 9, 2025.

The Assault with a Dangerous Weapon conviction stemmed from an incident on February 28, 2023, when White assaulted his romantic partner with a knife. The victim was trying to break up with White, which angered White. While sitting in the victim’s vehicle in the parking lot where she worked, White held a knife to the victim’s body and asked how she wanted to die. The victim was able to escape without physical injury. White, however, stabbed the center console of the victim’s car causing property damage.

The Sexual Abuse of a Minor conviction stemmed from an incident in 2014 when White, 20-21 years old at the time, provided alcohol to two young teenage girls. The girls became heavily intoxicated and lost consciousness. White then removed the clothes of minor victim 1 and began to vaginally rape her. She came to and was able to push him off. White then found minor victim 2 and proceeded to vaginally rape her before she regained consciousness. The incident happened at White’s family home on the Lake Traverse Reservation.

These cases were investigated by the FBI and the Sisseton Wahpeton Law Enforcement. Assistant U.S. Attorney Elizabeth A. Ebert-Webb prosecuted the case.

This matter was prosecuted by the U.S. Attorney’s Office because the Major Crimes Act, a federal statute, mandates that certain violent crimes alleged to have occurred in Indian Country be prosecuted in federal court as opposed to State court.

This case was brought as part of Project Safe Childhood, a nationwide initiative to combat the growing epidemic of child sexual exploitation and abuse, launched in May 2006 by the Department of Justice. Led by the U.S. Attorneys’ Offices and the DOJ’s Child Exploitation and Obscenity Section, Project Safe Childhood marshals federal, state, and local resources to locate, apprehend, and prosecute individuals who exploit children, as well as identify and rescue victims. For more information about Project Safe Childhood, please visit https://www.justice.gov/psc.

White was immediately remanded to the custody of the U.S. Marshals Service.