BobbyHertz

Thanks so much for being in DC, camping out on the National Mall, so inspiring. Can you talk a bit about the first nation treaties that would be violated by the construction of Keystone XL? Have these treaties already been violated by existing tar sands pipelines?

For the June 2nd rollout, it'll be one standard for existing sources but states can choose from a variety of options with how to comply, i.e. cap and trade, investments in renewables, and the cheapest option: efficiency! In that respect, it's flexible. It'll be on the individual states to determine how they can best comply.-Rob, NRDC

In this respect, climate change and fossil fuel extraction is a great unifier. We have an opportunity to build a big, unprecedented umbrella because it impacts us all!-Rob, NRDC

There's a chance she'll be joining us for a bit on this very AMA, standby. -Rob Friedman, NRDC

How do we maintain momentum as Obama continues to kick the can down the road? How do we escalate our ask and pressure on the president?