Borders and border barriers can be breached and boundaries and political agendas can change. The Great Walls of China, Hadrian's Wall, and the Iron Curtain have lost their strategic value. Walls are contested presently in the Middle East. And the unpopulated DMZ in Korea, while still of strategic value, is being recognized for its biodiversity and resurgence of endangered flora and fauna. Presently, the United States is building a defensive wall along the U.S.-Mexico border in the name of national security and to stem the tide of drug and human trafficking. In the process it has waived numerous environmental laws thereby putting transboundary ecosystems in danger of irreparable harm. Why should there be interest? For the reason, as put forth by Mumme and Ibáñez, that while much attention has been paid to adverse environmental effects within the United States, "little attention has been given to the potentially complicated effects of the international boundary, water, and environmental agreements to which [the United States and Mexico] are party should Mexico choose to press its rights at the level of international law. . . . As international treaties and protocols, these agreements enjoy a legal standing that may supersede the authority of most domestic legislation." The implications are far reaching. Mexico has sent diplomatic notes to the U.S. embassy in Mexico and to the U.S. Department of State, and the Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Mexico's environment secretariat, has held informal talks with the Department of the Interior (DOI) and with the Secretary of Homeland Security--all apparently of no avail. Canada's notes have been similarly ignored by the Department of Homeland Security. What then for the U.S-Mexico border fence? Will it eventually become a relic of past political policy? Is the United States to ignore the lessons of the past and void its environmental treaties and agreements with Mexico? Should we not be concentrating on comprehensive immigration reform and the causes of drug abuse in the United States rather than a short-term solution to long-term problems?

無 / Walls provide not only physical but also ideological boundaries between neighbors. They can be seen as a symbol of protection or segregation. Using as stimulus the security fence between Mexico and the United States, this study aims to identify the main frames in American and Mexican political cartoons to decode the different messages and symbolism towards the border wall through which one can understand the U.S.-Mexico border issue as seen in the newspapers from the two countries. Using a qualitative analysis, the thesis studies 34 American and 69 Mexican cartoons from dailies that are representative of the press in the two countries. The cartoons evidence the use of six frames and symbolism: Death of migrants and the renegotiation of NAFTA were exclusively used by the Mexican papers. The freedom issue and the divisive nature of the wall balanced in both countries’ cartoons and the main preoccupations of the United States cartoons concerned the country’s double standard of hiring illegal migrant laborers while at the same rejecting an immigration agreement with Mexico. This study’s original contribution serves as a small step in the long road of empirical database expansion in framing political cartoons and the symbolism behind the portrayal of barriers.

This thesis looks at illegal public art produced on state built barrier walls. The focus is on the artist Ron English, and his artworks produced on the Berlin Wall, Israeli Barrier Wall, and Mexican Border Fence. I examine English’s works in their respective contexts of Cold War divisions, the Israeli/Palestinian conflict, and tensions at the border between United States and Mexico. I also situate English’s works in relation to other artworks produced on these barriers. I argue that English is doing something different from other barrier wall artists in his work in Palestine and Mexico, offering a framework for understanding the primary motivations and tactics behind barrier wall art and highlighting English’s unique contributions.

Living the vast majority of my life in an area that celebrates diversity but thrives because of illegal cross-border activities (undocumented workers, drug imports) at times the distance between the United States and Mexico is in fact as thin as the width of a fence. Though it is typical for a filmmaker to hope to present a unique take on a subject, given how I have seen the topics of immigration and the perspective of the purpose of homeland security portray, I am confident that there is an opportunity to show these issues in a more personal, less aggressive light with the use of first person accounts instead of a dependence on the most violent aspects of these topics. The main subject will give character to this agency by blurring the lines of his life as an agent and as a citizen.