A 2018 law granted CFIUS the authority to review property transactions close to sensitive U.S. facilities, including Francis E Warren Air Force Base.

According to the White House order, MineOne’s property purchase was not filed to CFIUS until after the agency launched an investigation following a tip from the public.

In a statement by U.S. Secretary of the Treasury Janet Yellen, said the move against MineOne “highlights the critical gatekeeper role that CFIUS serves to ensure that foreign investment does not undermine our national security.”