Marijuana magazines are under scrutiny in Colorado, where lawmakers might require stores to put them behind the counter.

The unusual provision to treat pot magazines like pornography faced a hurdle in the Senate Thursday. It was added to a marijuana regulation measure last week when the House debated it.

High Times magazine says the provision would make Colorado the only state to treat pot magazines like porn. A lawyer for the magazine says it would consider suing if the provision is signed into law.

The Senate committee considering the magazine provision is also debating whether to retain another contentious measure added by the House to the regulation bill. That is whether to revive a blood-level driving limit rejected four times by the Senate.