The Supreme Court last week overturned a 40 year precedent. In a case brought by New England fisherman, the court reversed what's been know as Chevron deference. In the 1984 case, the courts said judges should generally defer to federal agencies when rules they make are reasonable, and the enabling law was ambiguous. Last week's decision reverses that thinking. For what this may mean for agency rulemaking operations, we turn to the chair of the Administrative Conference of the United States, Andy Fois. Learn more about your ad choices. Visit megaphone.fm/adchoices