Fronteras: How environmental concerns stack up against border security as Congress considers adding more fencing along the U.S.-Mexico border. This weekend marks the 20th anniversary of the outdoor jail that has become a symbol of the law enforcement style of Maricopa County Sheriff Joe Arpaio. The Hopi Nation in northern Arizona is in the middle of what advocates call a domestic violence epidemic. Also, why the chilies in your favorite hot sauce may give you more of a kick than you bargained for.