The Supreme Court has imposed new restrictions on how workplaces can seek to promote racial diversity in employment decisions. On Monday, the court ruled in favor of a group of white firefighters in New Haven, Connecticut, who alleged rules aimed at promoting workplace diversity subjected them to discrimination. At issue was a decision by New Haven city officials to discount a promotions test that had yielded poor results for people of color. The case has come under greater scrutiny because Supreme Court nominee Judge Sonia Sotomayor was part of a lower court panel endorsing New Haven’s actions.