See this article. Wikileaks recently has released them and we can see why she didn’t want them made public: They contradict her current statements on a number of issues. In April of ’13 she told Morgan Stanley that she supported the Simpson-Bowles austerity program which would have cut social security benefits. Now she champions increases to social security and instead of austerity favors stimulus. In a 2013 speech she was in favor of NAFTA. But she now rejects the TPP.
So the issue is whether we can trust that she has genuinely changed her positions via an evolution or she is just saying those things to win an election. I also have doubts she is sincere given her history. But it seems the Sanders revolution has made her aware that in order to win she has to move to more progressive policy. And it is up to us citizens to hold her to these policies if she’s elected. We also need to build a strong independent movement and work toward running an independent to primary Clinton in 2020. Clinton just might hold to her promises if we can mount real threat to her Presidency.