 Officials tell Reuters the main objective is to improve the composition of researched population and to increase participation by some groups, including black Americans. Billionaire Warren Buffett is switching up his plans for his fortune after his death. Erin Real reports. The Berkshire Hathaway CEO has established a new charitable trust that will be overseen by his three children. He tells the Wall Street Journal that he has 100 percent trust in how they will carry things out.