It's not insulting. It's a threat to their sovereignty. It's comparable to if lots of map makers changed the borders of the US to give Texas to Mexico, and it w

It's not insulting. It's a threat to their sovereignty. It's comparable to if lots of map makers changed the borders of the US to give Texas to Mexico, and it was acknowledged by international companies operating there and it was taught to kids in school. Eventually, by massive popular belief, it would be nearly impossible to retain it under US control because everyone would think it's obviously part of Mexico, including vtoers. Of course there's no risk of that happening in the US so they don't have to police it. For recently taken territories though, the position is weaker and easier to lose, so the new owners have to control the popular belief about whose it is.