You mean to say we signed treaties requiring we ruin ourselves in order to save another country's refugees? By whom and when was that done?
No, I didn't say we signed treaties to "ruin ourselves", but I'm pretty certain we have signed treaties dealing with refugees and human rights. I can't name them off the top of my head. I'm not a legal scholar. I doubt they existed before World War II, but after that war there were millions of refugees in Europe and Asia. Since then there have been countless wars in the Third World, many of which also generated refugees. The UN and other international organizations have set up rules and frameworks to attempt to deal with the problem.
If Country A deteriorates into civil war, civilians who don't want to be caught in the crossfire will pack up their belongings and flee. If they cross the border into Country B, what is Country B to do? Turn them back at gunpoint? Shoot them? Well, sometimes they do. In other cases, they will be settled in refugee camps run by the UN, Red Cross, or other organizations. These camps are almost always temporary, until the war ends and the refugees return home, or until they can get a third country to accept them. (The notable exceptions are the Palestinians, where the grandchildren of the original refugees still claim refugee status.)
We also see a variety of churches involved in the sanctuary movement. They probably regard it as Christian charity, and their duty to help the helpless.
Up until now this has been an academic exercise for the United States. We've never had a neighboring country melt down. Refugee problems have always been something that happens "over there" in other countries. So I'm pretty sure that any attempts to turn back people who claim refugee status would be regarded as violations of international law.
Now I'm not saying that Obama
is deliberately trying to destabilize Mexico. It was just in an article I read recently, and I don't remember where I saw it. Likewise, the headline of the article that is the topic of this thread has a question mark at the end. We're "just supposin'" and trying to come up with possible explanations for Gunwalker. Obviously, the way to prevent this scenario is to keep Mexico from deteriorating further, and building the border fence.
I should add that deliberately creating and exploiting a refugee situation on our own border, besides being an act of monstrous evil, is also a perfect Alinsky tactic: "Force your opponent to live up to his own rules."