I am downvoting this because of the descendants of the illegal ANGLO immigrants who came to Texas in the early 19th century profit and cheer the criminalization of those doing the same thing.
No it’s not. America was not at war with Mexico during 1812-1836. Tens of thousands of gringos came and illegally squatted on land as well as raped and killed numerous Tejano families for their land. You should brush up on your history.