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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 signed Executive Order 13778, 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 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 agencies signed the Navigable Waters Protection Rule on January 23, 2020, which revised the definition of "waters of the United States."