As taught by the University of Dayton Law School, this is the timeline of the land theft from Mexico by the United States.
Some of the verbiage used in the "quotes of the time" is inflammatory and would be considered racist in our current society, I personally find some them offensive, but these quotes are what is being taught. By referring to this to "retake" a developed country in this century is looter mentality.
There are other articles that one might find interesting at this web site.

http://academic.udayton.edu/race/02rights/guadalu3.htm