Source: United States Bureau of Alcohol Tobacco Firearms and Explosives (ATF)
RAPID CITY – United States Attorney Alison J. Ramsdell announced today that U.S. District Judge Camela C. Theeler has sentenced a Rapid City man convicted of Possession of a Firearm by a Prohibited Person. The sentencing took place on July 21, 2025.
William Janis, 25, was sentenced to two years and six months in federal prison, followed by three years of supervised release, and ordered to pay a $100 special assessment to the Federal Crime Victims Fund. This sentence was ordered to run consecutively to a state custody sentence Janis is serving for a prior drug conviction.
Janis was indicted for Possession of a Firearm by a Prohibited Person by a federal grand jury in February 2025. He pleaded guilty on April 28, 2025.
In December 2024, Janis was contacted by law enforcement officers after he was seen yelling outside an apartment complex in Rapid City and trying to gain access inside. Officers learned Janis had an active warrant, and he was subsequently arrested. After being arrested, Janis informed officers he had a firearm in his waistband. Officers located and seized a 9mm pistol. Janis had previously been convicted of a felony, was on parole for a felony drug conviction, and knew he was also prohibited from possessing firearms pursuant to his parole agreement.
This case is part of Operation Take Back America, a nationwide initiative that marshals the full resources of the Department of Justice to repel the invasion of illegal immigration, achieve the total elimination of cartels and transnational criminal organizations (TCOs), and protect our communities from the perpetrators of violent crime. Operation Take Back America streamlines efforts and resources from the Department’s Organized Crime Drug Enforcement Task Forces (OCDETFs) and Project Safe Neighborhood (PSN). Through PSN, the District of South Dakota seeks to bring together all levels of law enforcement and the communities they serve to reduce gun violence and make our neighborhoods safer for everyone.
This case was investigated by the Bureau of Alcohol, Tobacco, Firearms and Explosives and the Rapid City Police Department. Supervisory Assistant U.S. Attorney Benjamin Patterson prosecuted the case.
Janis was immediately remanded to the custody of the U.S. Marshals Service.