<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> By the end of his presidency on January 20, 2017, Barack Obama had exercised his constitutional power to grant 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 . </P> <P> Obama holds the record for the largest single - day use of the clemency power, granting 330 commutations on January 19, 2017, his last full day in office . He also has issued more commutations than the past thirteen presidents combined . </P>

What is it called when the president commutes a prison sentence