Philadelphia District Attorney Larry Krasner has implemented sweeping changes during his first 100 days in office, but, according to the city’s top prosecutor, one of the biggest hurdles the office faces now is a shortage of line prosecutors to execute all the new policies.

Krasner was inaugurated as the district attorney of Philadelphia on Jan. 2, and since that time he has stopped seeking cash bail for low-level offenses, told prosecutors to incorporate the cost of incarceration into their sentencing recommendations, hired an immigration attorney to advise the office about how certain charges might affect a defendant’s immigration status, and outlined new policies aimed at combating mass incarceration, including offering plea deals with shorter prison sentences and declining to pursue certain criminal charges.