In 2015, the Environmental Protection Agency (EPA) and the Department of the Army (the agencies”) published the Clean Water Rule: Definition of Waters of the United States”(80 FR 37054, June 29, 2015). On February 28, 2017, the President issued Executive Order 13778 entitled Restoring the Rule of Law, Federalism, and Economic Growth by Reviewing the 'Waters of the United States’ Rule” which instructed the agencies to review the 2015 rule and rescind or replace it as appropriate and consistent with law. On July 27, 2017, the agencies published a proposed rule as the first in a two-step process. On February 14, 2019, the agencies published a Federal Register notice proposing to revise the definition of ‘waters of the United States’ consistent with Executive Order 13778; the 60-day comment period closed on April 15, 2019. In this second step, the agencies are conducting a substantive re-evaluation and revision of the definition of waters of the United States” in accordance with the Executive Order. The agencies plan to finalize the revised definition after reviewing public comments on the proposal.