"It was a mixed result for a mixed verdict," Goetz said, adding that he would likely appeal.
Cree's attorney, John Brink, said the verdicts were inconsistent, giving them an issue to use in their appeal.
Morris' attorney, Tom Shiah, cited the same issue about inconsistent verdicts. He said he was glad Morris was acquitted of the racketeering charge but acknowledged his client was still "looking at a boatload of time."
Federal authorities say they've been investigating the Native Mob, though not these three defendants, since 2004, and have now secured 30 convictions since 2007.
In the latest case, investigators said they were targeting a criminal enterprise that used intimidation and violence to maintain power. Prosecutors said the case was important not only because of its size, but because the racketeering charge is rarely used against gangs.
The 2011 National Gang Threat Assessment called the Native Mob one of the largest and most violent American Indian gangs in the U.S., most active in Minnesota and Wisconsin but also in Michigan, North Dakota and South Dakota. It is made up of mostly American Indian men and boys, and started in Minneapolis in the 1990s as members fought for turf to deal drugs. The Native Mob is also active in prison.
The Native Mob had about 200 members, with a structure that included monthly meetings where members were encouraged to assault or kill enemies, or anyone who showed disrespect, according to the indictment. Authorities said McArthur would direct other members to carry out beatings, shootings and other violent acts to intimidate rivals.
The trial, which began in January, included nearly 1,000 exhibits and 180 witnesses.
Associated Press writer Amy Forliti contributed to this story.