Nobody seemed to know, really, what was covered by the Clean Water Act, beyond it prohibiting somebody from running a pipe into a major river and dumping whatever poison deemed too expensive to haul off to the landfill that day. Hundreds of thousands of acres of wetlands were in question, as well as tens of thousands of miles of smaller creeks (again, nobody was claiming that a navigable river, which remained protected, was not made up of unprotected tributary creeks or that the water from unprotected wetlands was not important to rivers). The result of trying to clarify all this confusion was the 2015 Waters of the U.S. Rule, issued by the Environmental Protection agency in 2015, which sought to clarify, as closely as possible, which waters are protected under the Clean Water Act. The 2015 Waters of the U.S. Rule was developed over the course of years—through more than 400 stakeholder meetings, and with a 200-day comment period. The 2015 Waters of the U.S. Rule re-established the protections of tributary creeks—some seasonal streams, and some of the wetlands covered before the Supreme Court's rulings in SWANCC and Rapanos. The rule basically did exactly what Supreme Chief Justice Roberts had asked: clarify what the Clean Water Act does and does not protect.