Gary. Let's not assign to Soros the magic powers -:))) He may finance leftists here and there, but in the end, it's the millions of people of the countries that rally behind their revolutionaries.
I think it will be a blessing in disguise if Obrador wrecks a havoc in Mexico. The US will have no choice but to take a Military control of the US-Mexico border and all the talks of North American Partnership which means creating the equivalent of EU in North America will be buried once and for all. As for Amigos, let them have their revolution on their territory.
I know I may sound cynical, but that's the way the things work quite often.