AdvertisementNebraska May Play Key Role In Canada Pipeline Battle03:42Download AudioResumeNovember 07, 2011Fred KnappfacebookEmailTransCanada plans to build the Keystone XL pipeline through Nebraska's Sandhills region shown here in Mills, Neb. State legislators have introduced bills barring pipelines in environmentally sensitive areas like the Sandhills and the Ogallala aquifer. (AP)