Hundreds of Native American tribes are getting money from lawsuit settlements with opioid companies. Some are investing the new funds in traditional healing practices to treat addiction.

It could amount to the last round of huge settlements after years of litigation over the industry's role in an overdose crisis linked to more than 500,000 deaths in the U.S. over the past two decades.

In the Purdue Pharma bankruptcy trial now underway, scrutiny has focused on the Sacklers' demand for immunity from opioid lawsuits that would extend to a vast network of individuals and businesses.

Companies that sold or distributed opioid medications face huge legal, financial and public relations peril. Critics say shareholders, not CEOs, will pay the price.