Wall Street Journal: Few issues divide Democrats more than energy policy, as we've learned as unions and environmentalists fight over the Keystone XL pipeline. More evidence now comes from California, where greens have lost an attempt to ban oil and gas hydraulic fracturing. Democratic leaders brought their fracking moratorium bill to the Assembly floor last week, and their rank and file revolted. The bill lost 37-24, with 12 Democrats joining 25 Republicans to defeat it. Another 18 Democrats abstained, and it's a good...