Police in Hawaii are reviewing a policy that requires medical marijuana users to surrender their firearms, according to officials.

The Honolulu Police Department sent letters to at least 30 gun owners last month, saying they had one month to turn in their firearms and ammunition or transfer their ownership.

The letters stated that the person was disqualified from gun ownership because of their medical marijuana use.

Indeed, law enforcers have a right to demand such a surrender thanks to the 1968 Gun Control Act, which prohibits anyone from owning a gun if they consume cannabis. That law is rarely enforced, however.

The order (obviously) sparked widespread backlash from residents, prompting the department to reconsider the order.

A police spokeswoman said Honolulu Police Chief Susan Ballard is currently reviewing the policy.

If police forces across the country chose to take a page from Honolulu’s book, millions of Americans could lose their Second Amendment rights.

It’s an issue many advocates have called upon the National Rifle Association – who have been notably silent on medical marijuana users’ rights – to address.

"A vast number of people would be felons under the law if it were enforced," Michael Hammond of Gun Owners of America (GOA) told Civilized in 2016. "If gun laws were enforced, tens of millions, perhaps a hundred million people wouldn’t be able to own a gun."

h/t The Associated Press