Illegal immigration to the United States of America has always been a hotly debated issue in the brief history of the country. One may point out that in a “nation of immigrants” it is not that odd. In the second half of the 20th century, however, illegal immigration has become more controversial than ever before. The main focus, not surprisingly, has been on the country’s Southern neighbor, The United Mexican States. It is a constant struggle for the federal government to try to put a stop to immigrants crossing the border and entering the U.S. illegally. The US-Mexican border stretches all the way from San Diego, California to El Paso, Texas.