‘Federal agents tasked local law enforcement in Southern California with recording the registrations of cars attending at least one gun show. The surveillance has angered gun enthusiasts, who called the action a violation of the Second Amendment.

Agents from the Immigration and Customs Enforcement Agency (ICE) asked local law enforcement to use plate reading technology to record information on vehicles attending the gun show in Del Mar back in 2010.

Data was then cross checked with information on vehicles which crossed the Mexican border, around 37 miles south of Del Mar, in the hope of finding gun smugglers, according to the Wall Street Journal (WSJ).’

Read more: Gun show attendees had licence plates monitored, federal agents admit