New York Times: Dirk Kempthorne, who served as interior secretary under the Bush administration, was grilled on his oversight of the oil industry. House Democrats sought Tuesday to use a hearing on the Interior Department’s role in the Gulf Coast oil spill to blame the Bush administration for regulatory failures that may have contributed to the April 20 explosion of the Deepwater Horizon oil rig. Democrats on the House Energy and Commerce Committee traced the roots of the disaster back to Vice …