Secondly, if we are going to open up the terms of the treaty, we could just annex all of Mexico. Two points here: (1) There was sentiment back in 1848 to annex all of Mexico. (2) One might wonder why one wants to have a Republic of Mexico at all given all the Mexicans who want to live in the U.S.
I should respect a paper that is willing to publish alternative views--but can one wonders if there were more plausible and sane views to publish.
Annex Mexico then the people there won’t have to sneak across the Rio Grande to be in the USA.