Respecting boundaries is foundational to being a good neighbor. Mexico and the United States have long struggled with how far – or how high – those boundaries should go. But being a good neighbor can also mean working together to find solutions to shared problems.

In today’s issue, Latin America bureau chief Whitney Eulich reports on an emerging shift in the region's attitudes toward U.S. involvement in tackling narcotrafficking. After decades of “Yankee, go home” sentiments behind widespread anti-interventionism, some leaders and citizens now say they’re open to a U.S. military presence.

The cartel problem “is impossible for Mexico to resolve on its own,” says Arturo Herrera, a media consultant in Guadalajara. He told Whitney he would like to see the U.S. and Mexico work together. The cartels “have their own intelligence, political influence, communications systems, missiles, and weapons. We will need outside help.”