Absent from public discourse, the harm that America's lax gun policy has outside of the USA. From the article:

According to former President Felipe Calderon, who oversaw the government’s efforts to crack down on drug cartel-related violence, Mexican authorities seized over 140,000 weapons (including 84,000 high-powered assault weapons) during his term. Up to 70% of these firearms were traced back to the US. In a press conference earlier this year, Calderon lamented that “One of the main factors that allows criminals to strengthen themselves is the unlimited access to high-powered weapons, which are sold freely, and also indiscriminately, in the United States of America.”