Associated Press: State regulators approved again on Tuesday the portion of the Keystone XL oil pipeline that would go through South Dakota, despite the projects stalled status at the federal level. The South Dakota Public Utilities Commissions decision also hinges on a requirement that TransCanada Corp. get a presidential permit for the project. President Barack Obama blocked the pipeline in November, but it could be revived under the next administration. South Dakotas decision further strengthens the companys...