Abstract
In the last few decades US-Mexico border region has undergone substantial changes. Several milion people have moved into the region and overall character of the region was greatly transformed.
Inhabitants of both countries encounter here and there's rise to stress, mainly due to the significant migration. Numbers of migrants entering the U.S. increased, to reach the point where the United States Government decided to take measures that should prevent the rising trend.
In the 90´ of 20th century, United States began to build border barriers that should stop the flows of illegal immigrants. Currently, these barriers are built along roughly one-third of the total length of the border.
The region is particularly important for Mexico because of its economic potential and large number of people who settled there. Moreover, in this area citizens of both countries are continuously confronted and the region has obtained very important position in relationship between Mexico and the U.S.