FRANKFORT, Ky. (AP) — Democratic U.S. Senate candidate Alison Lundergan Grimes called Wednesday on President Obama to approve the Keystone XL oil pipeline as she tries to defeat an incumbent Republican in the heart of coal country. Grimes' statement to The Associated Press comes on the day a group committed to blocking the pipeline announced it will spend $500,000 setting up field offices in Kentucky to try to defeat U.S.