Here’s why Arizona’s marijuana DUI cases can hinge on officer observations and a blood draw with no clear THC impairment cutoff.

The Phoenix Suns' Dillon Brooks was arrested on suspicion of marijuana DUI after Scottsdale officers said they smelled ...

Arizona senators have dialed back a pair of measures that would penalize people who create “excessive” amounts of marijuana ...

Valley attorneys tell 12News proving marijuana-related DUIs is different than those involving alcohol.

The Arizona Senate has passed a bill to penalize people who create “excessive” amounts of marijuana smoke or odor—a policy that’s received pushback from advocates who say the proposals amount to ...

PHOENIX — State senators have decided the right to smoke marijuana ends where a neighbor's nose begins.

Driving under the influence of alcohol and marijuana is punishable in the same way, but the process to prove the charge is different.

An Arizona state senator has introduced a bill to criminalize "excessive marijuana smoke and odor." The proposed law would classify the issue as a public nuisance, punishable by a misdemeanor charge.

State senators have concluded that the right to smoke marijuana ends where a neighbor's nose begins. On a 20-9 bipartisan margin, the Senate agreed to make it a crime if there is "excessive marijuana ...

Local, state and federal law enforcement are hailing the results of a monthslong drug crackdown dubbed Operation Mechanic.

A Republican-backed proposal would penalize Arizona cannabis users whose smoke or odor drifts onto neighboring property, drawing sharp opposition from civil liberties and marijuana reform advocates.

PHOENIX — Arizona voters will get to decide if they want to be able to use marijuana recreationally. In a brief order Wednesday, the Arizona Supreme Court rebuffed arguments by foes of Proposition 205 ...