The push would spark an intense legal fight over the right of a president to grant sweeping lands protections under the 1906 ...

Trump administration targets national monuments for energy development, including sacred land near Grand Canyon, sparking ...

The Trump administration is considering reducing the boundaries of six national monuments for possible mining and drilling for energy ...

International Boundary Monument 258 stands as a historic symbol at the border between the U.S. and Mexico, marking the birth of California's shape.