WASHINGTON — A Commerce Department report on U.S. reliance on foreign sources of minerals deemed essential for national security has stirred fears among environmental groups that the Trump administration may lift existing bans on new mining claims on public lands, including sites near the Grand Canyon.

Commerce recommended in the report released this week that the Interior and Agriculture departments complete a “thorough review” of all such bans — also called withdrawals — and develop “appropriate measures to reduce unnecessary impacts that they may have on mineral exploration, development and other activities.”

Environmental groups including Earthworks and the Grand Canyon Trust say they worry the report could give the Trump administration a rationale for opening federal lands to new mineral extraction, including in places previously believed to be off the table. They fear especially that it could lead to the rescission of the 20-year moratorium on new uranium mining near the Grand Canyon put in place by the Obama administration.

“This appears to be every mineral withdrawal ever created,” said Aaron Mintzes, senior policy counsel at Earthworks, adding that the review outlined by Commerce would be much larger in scope than the Interior Department’s 2017 review of national monument designations. “What we see here is an attempt to undo every mineral withdrawal ever done in the history of our Union. I don’t see any other way to read this.”

The Trump administration says it has been increasingly concerned about domestic supplies of minerals it has deemed essential to the nation’s economic and national security. These efforts are supported broadly by congressional Republicans and some Democrats.