The WaPo editors play their hand openly:

Keystone XL’s continued delay is absurd

[…]

The administration’s latest decision is not responsible; it is embarrassing. The United States continues to insult its Canadian allies by holding up what should have been a routine permitting decision amid a funhouse-mirror environmental debate that got way out of hand. The president should end this national psychodrama now, bow to reason, approve the pipeline and go do something more productive for the climate.