Border planned for 100 miles: monument, refuge

The U.S. government plans on replacing barriers through 100 miles of the southern border in California and Arizona, including through a national monument and a wildlife refuge, according to documents and environmental advocates.

The Department of Homeland Security on Tuesday once again waived environmental and dozens of other laws to build more barriers along the U.S.-Mexico border.

Funding will come from the Defense Department following the emergency declaration that President Donald Trump signed this year after Congress refused to approve the amount of border wall funding that he wanted.

Barriers will go up at Organ Pipe Cactus National Monument, a vast park named after the unique cactus breed that decorates it, and Cabeza Prieta National Wildlife Refuge, which is largely a designed wilderness home to 275 wildlife species. The government will also build new roads and lighting in those areas.