“My art can’t help but comment on political, cultural and environmental issues of the U.S.-Mexico borderlands,” says the award-winning artist.

The Trump administration is backing away from treaty mandate to “give preferential attention to the solution of all border sanitation problems.”

Mystery untreated sewage appears in Mexico just across the border from an Arizona wastewater-treatment plant, city official says.

President Trump and Congress ignore the nation’s poorest residents along the U.S.-Mexican border, where an environmental health crisis threatens millions of lives.

There’s little talk of actually building a physical wall, though, and more discussion of cameras, facial recognition and other technology.

The National Butterfly Center just filed suit to block Trump’s border wall from being built on its property in Texas.

Trump’s border wall would imperil some of the most diverse ecosystems in two countries.

Why are government contractors clearing trees on a private Texas butterfly sanctuary?

Many species could go extinct if the border wall is built, experts warn.