President Obama on Monday granted clemency to 231 federal inmates, the most in a single day by any president in U.S. history. Obama commuted the prison sentences of 153 people and pardoned 78 others, a sign he is ramping up his use of clemency power during his final weeks in office. The president has frequently doled out commutations as his final months in office wane. But he has seldom handed out pardons, which formally forgive prisoners for their crimes and restore certain rights. Commutations simply cut short their sentences. With Monday’s grants, Obama has more than doubled the number of...