Environmental Protection Agency chief Scott Pruitt issued a proposed rule on Friday to clarify the administration’s intent of repealing the Obama-era Waters of the U.S. rule, which is one of the pillars of Trump’s deregulation agenda.

“We are making it clear that we are proposing to permanently and completely repeal the 2015 WOTUS rule and keep the pre-2015 regulatory framework in place as we work on a new, improved WOTUS definition,” Pruitt said in a statement.