Federal agents have persuaded police officers to scan license plates to gather information about gun-show customers, government emails show, raising questions about how officials monitor constitutionally protected activity.
Emails reviewed by The Wall Street Journal show agents with the Immigration and Customs Enforcement agency crafted a plan in 2010 to use license-plate readers—devices that record the plate numbers of all passing cars—at gun shows in Southern California, including one in Del Mar, not far from the Mexican border.
Agents then compared that information to cars that crossed the border, hoping to find gun smugglers, according to the documents and interviews with law-enforcement officials with knowledge of the operation.
http://www.wsj.com/articles/gun-show-customers-license-plates-come-under-scrutiny-1475451302
First they came for the Muslims, and I did not speak out—
Because I was not a Muslim.
(Score: 3, Informative) by butthurt on Wednesday October 05 2016, @09:10AM
According to the ACLU
Roughly two-thirds of the United States' population, about 200 million people, lives within the 100-mile zone that an outdated federal regulation defines as the border zone [...]
-- https://www.aclu.org/know-your-rights-governments-100-mile-border-zone-map [aclu.org]
which I would imagine might include Del Mar, California.
https://en.wikipedia.org/wiki/Del_Mar,_California [wikipedia.org]
I didn't read the full article because haven't a subscription to the Wall Street Journal.