Her biggest weak points have been her failure to get specific about a federal minimum wage and to take a stand on the Trans-Pacific Partnership. Until now. The Clinton campaign is deeply underestimating the grassroots appetite for shutting down the Keystone XL. Her hedge today is punctuated by the presence of Berman in her campaign. If she wants to maintain her integrity on Keystone, she must do one of two things:

1) Dismiss Berman so that her policy approach isn't unduly influenced by his presence;

2) Actually say what she would do as president about Keystone—then voters can judge for themselves.

Hillary Clinton's team may not recall the 2011 Keystone protests that drew thousands to Washington for arrestable actions and thousands more to form a human chain several-people deep around the White House. But if she thinks climate change activists are going to be any easier to dodge than Dreamers or Black Lives Matter activists, she is mistaken.

Clinton's response today goes straight to the heart of her credibility with the progressive base, not to mention her trustworthiness with Democratic voters more broadly. I'll tell you if you elect me, is no answer at all.

