"Why aren't they approving this one?"

Interesting link at Blue Virginia about tar sands pipelines.
Did you know there's a new pipeline from Canada to Wisconsin?
Neither did the Democratic senators contacted by National Journal.
Thus, we get the quote from Louisiana's Mary Landrieu.

“The same administration approved that one?” said Sen. Mary Landrieu, D-La., who also didn’t know that the Obama administration had backed the Enbridge project. “Then why aren’t they approving this one? I don’t know.”

Should the Obama administration be touting this pipeline support?

Or does it want the news kept quiet, to keep it's environmental allies happy?

Until after the election.