Gavel and Scales

SIOUX CITY, Iowa (AP) - A Nebraska man has been sentenced for his involvement in a conspiracy targeting a potential drug trafficking witness in Iowa.

Federal court records say 24-year-old Andrew Nissen was sentenced Wednesday in U.S. District Court in Sioux City to 15 years and eight months. He'd pleaded guilty to conspiracy to distribute a controlled substance and use of a firearm in a drug trafficking crime.

As part of a plea agreement, charges of conspiracy to tamper with a witness by attempting to kill a person and tampering with a witness by attempting to kill a person were dismissed.

Nissen, of South Sioux City admits in the plea agreement that on Aug. 1 last year, he drove Isaac McDonald to a Sioux City location where McDonald shot John Mercure in order to keep him from speaking to police about drug trafficking and firearms. Mercure soon crashed into a tree but survived.

McDonald has pleaded guilty to charges for drug, weapons and other crimes.

In other news

OMAHA, Neb. (AP) - The Nebraska State Board of Education has approved new social studies standards aimed at encouraging students to look at history from multiple perspectives, including those of religious, racial and ethnic groups, women, LGBTQ people and Native American nations.