Native American tribes and environmental groups preparing for a legal battle to stop President Donald Trump from dismantling Utah's new national monument face a tougher challenge than anticipated.
Republican officials in the state who oppose Bears Ears National Monument asked Trump to rescind the designation. But U.S. Interior Secretary Ryan Zinke recommended the monument be downsized instead, noting past presidents have tinkered with the boundaries of lands protected under federal law.
Legal experts disagree on whether the 1906 Antiquities Act allows a president to reduce a monument, and it's something that has never been challenged in court.