One of the things that struck me about visiting Mexico last year was the feeling of being in an unstable environment. Military road blocks were common as were people carrying concealed pistols in their vehicles. You could feel the tension once you got away from the tourist areas and into the poorer ones.
That was Southern Mexico and things are far worse in the North. This sobering article in The Atlantic captures the growing instability that narcotics traffickers have generated in our Southern neighbor. Corruption is endemic in Mexican society and it quickly becomes hard to tell the white hats from the black hats or even if there are any white hats. If things escalate this year and they appear to already, we are going to have a huge problem on our border. What would happen if we suddenly had a big refugee influx crossing into the States?
That is a contingency we have to plan for but I doubt our government will. The lack of interest in foreign affairs that the Obama administration suffers from will mean if this happens it will be a complete surprise to them.