In response to a lawsuit from conservation groups, the Federal Highway Administration and Arizona Department of ...

Casa Grande Ruins National Monument located in Arizona preserves Hohokam Culture ... explorers as long ago as the 17th century. Built by Sonoran desert people who have come to be called the ...

The Chuckwalla National Monument will protect public lands in southeastern California and will extend a conservation corridor stretching into Utah.

“This is good news for Arizona’s public lands and wildlife ... North of Tucson, the highway would run alongside Sonoran Desert National Monument, threatening its wilderness and recreation, severing ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive ...

This section of the Sonoran Desert near the border between Arizona ... is waiving the following laws to build proposed sections of border wall in Arizona and California near national park lands. Read ...