shannon just heard the arguments and is joining us from outside the supreme court. i just stepped out and what that boils down to is how far the e.p.a. s regulatory power goes. this case is not about whether the e.p.a. can regulate the gases. but how they go about doing that is in question. they decided to expand the regular la cory power so it would cover a number of stationary sources of those gases but what happened was under the statute as it was written, the e.p.a. argues it would have led to ridiculous results that congress may not have intended would have been regulated under the special permitting process. the agency essentially rerote the statute. a number of members of congress did file a brief in this case saying it s one of the biggest power grabs that an administrative agency or the executive branch has ever made saying they re the ones who wrote the statute and if there