The U.S. may enter a recession within two years, Blackstone Group LP President Tony James said, as he outlined challenges to economic growth. “It wouldn’t surprise me if we had one in 2017,” James said Wednesday at Bank of America Corp.’s banking and financial services conference in New York. “I’m turning more pessimistic now. There are a lot of headwinds facing us right now.” James, who leads New York-based Blackstone with Chief...