Native American nations say the Supreme Court’s rejection of a challenge to the Indian Child Welfare Act has reaffirmed their power to withstand threats from state governments.

They say the case conservative groups raised on behalf of four Native American children was a stalking horse for legal arguments that could have broadly weakened tribal and federal authority.

“It’s a big win for all of us, a big win for Indian Country. And it definitely strengthens our sovereignty, strengthens our self-determination, it strengthens that we as a nation can make our own decisions,” Navajo Nation President Buu Nygren said Monday.

In fact, the 7-2 ruling released Thursday hardly touched on the children, who were supposed to be placed with Native foster families under the law. The justices said the white families that have sought to adopt them lack standing to claim racial discrimination, in part because their cases are already resolved, save for one Navajo girl whose case is in Texas court.

Instead, the justices focused on rejecting other arguments aimed at giving states more leverage, including sweeping attacks on the constitutional basis for federal Indian Law.

“This was never a case about children,” Erin Dougherty Lynch, senior staff attorney for the Native American Rights Fund, told The Associated Press. “The opposition was essentially trying to weaken tribes by putting their children in the middle, which is a standard tactic for entities that are seeking to destroy tribes.”

Justice Amy Coney Barrett’s majority opinion said these plaintiffs wrongly claimed that “the State gets to call the shots, unhindered by any federal instruction to the contrary.”

Justice Neil Gorsuch spent 38 pages explaining how up to a third of Native children were taken from their families and placed in white homes or in boarding schools to be assimilated. In response, the 1978 law requires states to notify tribes if a child is or could be enrolled in a federally recognized tribe, and established a system favoring Native American families in foster care and adoption proceedings.