Since 1989, Rep. John Conyers, D-Mich., has introduced into each session of Congress a bill called HR 40, Commission to Study Reparation Proposals for African Americans Act. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

The Edna Karr High School marching band had fewer than 40 members four years ago. Today, more than 80 students march in the band. Keith O'Brien/NPR hide caption

itoggle caption Keith O'Brien/NPR