President Obama has made history by becoming the first sitting president to visit a federal prison as he continues a push to reform the country’s criminal justice system. On Thursday, he visited El Reno Federal Correctional Institution in Oklahoma.

President Obama: “Visiting with these six individuals, and I’ve said this before, when they describe their youth and their childhood, these are young people who made mistakes that aren’t that different than the mistakes I made and the mistakes that a lot of you guys made.”

Meanwhile, at a speech to the NAACP Wednesday, former President Bill Clinton said he regrets signing the “three-strikes” law and other legislation that dramatically increased prison sentences.