Pipeline supporters approve , environmentalists condemn the report . The proposed oil pipeline between the U.S. and Canada is politically charged . Next step is a 90-day comment period , followed by another State Department decision . `` I will not be satisfied with any analysis that does not accurately document what is really happening on the ground when it comes to the extraction , transport , refining , and waste disposal of dirty , filthy tar sands oil , '' said Democratic Sen. Barbara Boxer of California . Comment:
Pipeline supporters approve , environmentalists condemn the report . The proposed oil pipeline between the U.S. and Canada is politically charged . Next step is a 90-day comment period , followed by another State Department decision . Comment: