joining me now is elie eating mystal, justice correspondent at the nation. st of the -- author of allow me to retort, a black guys guide to the institution. elie, like i tweeted, you've got four more hours of sleep, so i know you're going to bring the heat this morning. but let's settle down and let's talk about what happened this week in the supreme court. you wrote a piece in the nation talking about how this is the greatest paragraph since the early 18 hundreds. but explain very quickly to our viewers why they should care so much about the chevron deference doctrine. >> okay, so congress is going to pass a law, right? we vote for congress people, so we have some -- on what laws they pass, right? but those laws are going to have gaps because congress can't think of every possible iteration of its laws and also, you know, congress is sometimes incompetent, right? let's say congress passes an act, a clean water act. congress is not going to define what water is, what clean is, exactly. it's going to leave it to the experts at the epa to make the fine decision