joining us is josh blackman, sant professor of law.and the executive director of center. >> let me start with you. hasn't earlier supreme court decisions made it clear that there's federal authority in the area, that the states can't make policy. >> thank you for having me. the supreme court explained that in immigration, it's the congress who makes authority, and gives the ability to enforce that. it declines to deport four or 5 million people. it is not controlled by a number of supreme court decisions. the fact that the district court judge pronounced the state as having standing, that's a big deal, isn't it? >> this is based on a 2003 decision in massachusetts. they claimed the bush administration was not passing varies environmental rules. because they were not passing, there would be climate change. because there was climate change, seas would rise, and the coastline of massachusetts would be injured. the supreme court in an opinion said yes, massachusetts can sue the administration. and it was based on that that president obama'