Alan Krueger, a Princeton University economist who served as a top adviser to Presidents Bill Clinton and Barack Obama, died Saturday, according to the university. The 58-year-old committed suicide, his family said in a separate statement released by the school Monday. “It is with tremendous sadness we share that Professor Alan B. Krueger, beloved husband, father, son, brother, and Princeton professor of economics took his own life over the weekend,” the family said. “The family requests the time and space to grieve and remember him.” Krueger served as a Labor Department economist under Clinton, then as a top Treasury official...