Sinking to the level of your opponent isn't going to improve matters. I sympathize with the Mexicans in the current situation, there is a lot to be worried about. But any kind of solution or argument should face a practicality test first and this one will simply waste a whole bunch of time.
It would be akin to the Dutch and the Germans going back a few hundred years in order to redraw our borders (or better yet, the Poles, the (Bela)-Russians and the Germans).
This is a bizarre hate filled reaction to suggestion that politics within Mexico will lead it to start a lawsuit in International Courts as a counter to current US politics. As the article points out, there is a chance that Mexico could win the case within the court and even if it did the US would never recognize that.
Still, a technical win could have international political affects. For example, the US has veto power in the UN and control of many international institutions such that they can't be used directly against the US, yet its ability to use international mechanisms to take actions against nations such as Mexico relies in part on its reputation for heeding international decisions.
Sorry?
That was not the point I made but you're welcome to your own interpretation of course.
This isn't going to happen.
Mexico has a hard enough time to control events inside its own borders.