http://www.slate.com/articles/news_and_politics/crime/2015/09/presidential_pardons_presidents_are_using_their_clemency_power_far_less.html

Attorney Margaret Colgate Love has dedicated her career to securing mercy for people who have been convicted of crimes. When she worked for the Justice Department as the U.S. pardon attorney from 1990 to 1997, this meant reading and vetting clemency applications and identifying individuals whose cases merited the attention of the Oval Office. In the years since, she has been running her own law practice, where she has specialized in clemency petitions, and has been one of the most prominent advocates in Washington for the executive branch acting less stingy in its approach to clemency.