By the end of his second and final term on January 20, 2017, United States President Barack Obama had exercised his constitutional power to grant the executive clemency—that is, "pardon, commutation of sentence, remission of fine or restitution, and reprieve"—to 1,927 individuals convicted of federal crimes. Of the acts of clemency, 1,715 were commutations (including 504 life sentences) and 212 were pardons. Most individuals granted executive clemency by Obama had been convicted on drug charges, and had received lengthy and sometimes mandatory sentences at the height of the war on drugs.