Attorney General Gurbir Grewal says recreational marijuana would pose challenges for detecting impaired people and testing drivers, and even for drug dogs.
Attorney General Gurbir S. Grewal announced a request for federal documents and made the legal threat on the same day that Interior Secretary Ryan Zinke visited New Jersey to discuss energy.
New Jersey's top law enforcement officer has launched an investigation after reports that a British data analysis firm captured information from 50 million Facebook users without their consent.
Murders in New Jersey plunged by the biggest amount in decades in 2017, with the murder rate at its lowest level in over a half-century of record keeping.