Per the U.S. Department of Transportation, "Pipeline transportation is the safest and most economical means of transportation for our nation's energy products.... Oil pipeline spills amount to ... less than one teaspoon of oil spilled per thousand barrel-miles." An evaluation of the proposed Keystone pipeline by the Obama administration State Department found that the pipeline would cut the risk of spillage by more than half compared to other modes of transportation that will be used if the pipeline is not built.