Joe Biden just can't get his story straight on his green energy promises. In Pittsburgh, in front of union workers last month, he declared: "I am not banning fracking. Let me say that again. I am not banning fracking. No matter how many times Donald Trump lies about me." But that is far from what he was saying earlier this year. During a March Democratic primary debate exchange between Sen. Bernie Sanders and Biden, Sanders started by saying: "I'm talking about stopping fracking as soon as we possibly can. I'm talking about telling the fossil fuel industry that they are...