Originally built as a storage area, the gym was converted to its current state in the late 1940s, although who is responsible for the transformation is not known. Some have said that it was at the suggestion of architect Cass Gilbert, Jr. who took over many of his father's projects after he died. Among the justices known for their on-court prowess was Justice Byron White who, as the runner-up for the 1937 Heisman Trophy and former National Football League player, is considered to be the Supreme Court's preeminent sportsman. Among the Supreme Court clerks who have played is Fox News commentator Laura Ingraham, and current Supreme Court Justices Elena Kagan and Brett Kavanaugh. Near the entrance to the gym is a sign that reads "PLAYING BASKETBALL AND WEIGHT LIFTING ARE PROHIBITED WHILE THE COURT IS IN SESSION".