It was all about getting more identifiably American guns into the mix. That way they can blame American gun culture for their problems.
That is one reason you are not hearing much out of Mexico over this.
Of course some Mexicans have no idea what is going on and will jump at any reason to attack the U.S.
What are just 200 dead insignificant peons compared to the Socialist Dream of Destroying the Constitution, or to the Glory Of Obama?