Obviously, the Mexico problem is not getting the press in your part of the country. There are many places safe to go, but you never know when or where the cartel influence is going to pop up. It no longer is strictly a situation of the cartels fighting and killing other cartels. They have found other sources of funding their activities as it has become riskier to cross the border. Now there are kidnappings, extortions, etc. of non-cartel mexicans and americans if you happen to be at the wrong place at the wrong time.
It is simply not how it used to be and is getting worse by the month.
I love Mexico and its citizens, but I would not cross the border on a bet and have not for several years now, and we live only 150 miles away. I would think if you are driving a nice RV rig you might be subject to a highway hijack just because they know you have the means.
2009 Newmar 42 ft. Allstar 4188, Wheelchair Accessible, 400HP Cummins ISL, Allison 3000, Mastertow Dolly, '98 Riviera