The U.S. Supreme Court on Friday will consider the Trump administration’s request that the justices indefinitely delay briefing on a key issue in pending challenges against an Obama-era environmental rule that broadened the scope of protections accorded to U.S waterways.

The Trump administration, through an executive order, last month directed the U.S. Environmental Protection Agency to revise the Waters of the United States rule. The high court in January granted review in National Association of Manufacturers v. U.S. Department of Defense.