A couple missing US/Mexico things[edit]

First of all, let me say that this animation is great! I love animations like this, and this one is by far the most detailed I've seen. With that said, I think there are at least a couple things missing, both relatively small things involving the Rio Grande portion of the border with Mexico: (1) The American–Mexican Chamizal Convention Act of 1964 and the Boundary Treaty of 1970. --Rwv37 (talk) 17:07, 19 April 2021 (UTC)[reply]