The Colorado Senate on Thursday passed a first-in-the-nation bill expressly permitting marijuana clubs. But Gov. John Hickenlooper is hinting that he’ll veto the measure unless it bans indoor smoking.

The bill allows local jurisdictions to permit bring-your-own pot clubs, as long as those establishments don’t serve alcohol or any food beyond light snacks.

The bill doesn’t say whether those clubs could allow people to smoke pot indoors. That means it would be possible for a membership club that is closed to the public and has no more than three employees to permit indoor pot smoking.

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