Castaneda helps change the Bush administration's views to reform its immigration policy. Castaneda believes throughout his article that North American economic and social integration will occur over time. Castaneda is firm on this point, even though he is constantly frustrated by Washington's inability to reach reasonable consensus on bipartisan strategies. Ex Mex seems to give a modern Mexican perspective written for Mexicans. In the first chapters, Castaneda uses several testimonies to explain how Mexican immigration patterns expanded drastically in the 1990s. Castaneda was keen to emphasize the issue of seasonality from which he created the second part of the title: “From migrants to immigrants”. He talks about the reduction in the number of immigrants returning to Mexico due to the much stricter border control guidelines. It also dramatically increased the number of Mexican immigrants in the United States, both legal and illegal. There are approximately 11 million in 2007 and it is estimated that 6.2 million are