The U.S. Supreme Court held Thursday that an insurer on the hook for millions of dollars in asbestos claims can object to the Chapter 11 reorganization plan of companies that sold asbestos-containing building materials.

Justice Sonia Sotomayor wrote the unanimous opinion in Truck Insurance Exchange v. Kaiser Gypsum, holding that an insurer is a “party in interest” that can object under Section 1109(b) of the Bankruptcy Code when it “may be directly and adversely affected by the reorganization plan.”