He teaches subjects such as foreign policy of the United States, the politics of Mexico, Latin American politics and border issues, among others. His research agenda focuses on United States-Mexico relations and border issues, including border security and cross-border cooperation. He has written several articles on these subjects as well two pertinent books, “Cops, Soldiers, and Diplomats: Explaining Agency Behavior in the War on Drugs” and “The Three U.S.-Mexico Border Wars: Drugs, Immigration and Homeland Security.”