I never said that they didn't but the WHY matters. Oversimplification is the number one leftist tactic to demonize the things they wish to tear down. If Mexico still had that land how much different would it be today? It was a sparcely populated frontier that made up over half their land and less than 10% of their population...leftovers from French and Spanish imperial claims. The US made much better yet use of that land than Mexico ever would have so it's a good thing that is rightfully US territory. We won.