What does new Prez candidate Bernie Sanders have to say about criminal justice reform?

As reported in this new AP article, headlined "Vermont Sen. Bernie Sanders announces 2016 presidential run," Hillary Clinton now has some official competition for the Democratic nomination for president. But, as highlighted by the question in the title of this post, while Sanders "enters the race as a robust liberal alternative to Hillary Rodham Clinton," it is entirely unclear what he thinks about various state and federal criminal justice reforms being discussed and debated nationwide. Here are excerpts from the AP article concerning Sanders' plans for his campaign:

[H]e pledged to do more than simply raise progressive issues or nudge the former secretary of state to the left in a campaign in which she is heavily favored. "People should not underestimate me," Sanders said. "I've run outside of the two-party system, defeating Democrats and Republicans, taking on big-money candidates and, you know, I think the message that has resonated in Vermont is a message that can resonate all over this country."...

Sanders said he would release "very specific proposals" to raise taxes on wealthy Americans and corporations, as well as offer tuition-free education at all public colleges and universities. He touched on his past opposition to free-trade agreements, his support for heavier regulations of Wall Street and the nation's banking industry, and his vote against the Keystone XL oil pipeline as a preview of his campaign.

In a quick review, I could not find any discussion of any sentencing issues on Sanders' Prez campaign site or Senator webpage, and I cannot recall any notable comments by him on any significant criminal justice reform issues. For that reason (and others), I continue to think that an array of GOP candidates more so than any Democratic candidates are most likely to push Candidate Clinton on criminal justice issues.