At some point, Mary Landrieu’s rhetoric about her indispensability and clout as the chair of the Senate Energy Committee was going to have to be backed up with some deliverables, or at least evidence that she could make policy beneficial to the oil and gas business in Louisiana.

Unfortunately, she hasn’t been able to generate much. The Keystone XL pipeline debate, in which Landrieu can’t move the pipeline forward despite being fairly vocal in support of it, has created a fairly clear example of just how much pull she actually has.

And today the National Republican Senatorial Committee popped out a web ad castigating Landrieu for overrating her clout in the Senate and her lack of deliverables where Keystone XL is concerned…