Eminent Domain Corridor from Canada to Texas

Yup, the TransCanada is already suing midwest residents who are refusing
to let their pipeline through their land.
TransCanada in Eminent Domain Fight Over Pipeline
<http://www.nytimes.com/2011/10/18/us/transcanada-in-eminent-domain-figh\
t-over-pipeline.html?pagewanted=all>
... and libertarians are the party of environmental indifference? Then
why are the democrats and republicans the ones proposing the government
ACTIVELY FACILITATE this corporate endeavor at the expense of private
property?