Meanwhile, speaking in Modesto, California, Clinton’s Democratic rival, Vermont Senator Bernie Sanders, said he was the best candidate to defeat Trump. Sanders also took aim at Clinton’s policies on climate change.

Sen. Bernie Sanders: “Of course she recognizes the reality of climate change. But I want her to join me in supporting a tax on carbon. I want her to change her views on the very important issue of fracking. She supports fracking. She wants to regulate fracking, but there are people who think you really, by definition, cannot effectively regulate fracking. And when she was secretary of state, she pushed the fracking technology on countries all over the world.”