I don't think Gov. Heineman's ok for the pipeline will make any difference.  If you look at a map of the current pipelines crossing the United States Keystone would be just another one in many.  Keystone would probably me more environmentally sound than anything currently in the ground - due to newer products.  The President does not want Keystone or does not care but wants to keep his environmentalist friends happy.  He will find a new excuse to stop the development of Keystone XL at the expense of jobs and the price of gasoline.