Marijuana opponents in Colorado have given up a plan to ask voters about requiring less-potent pot and telling pot shoppers that the drug could cause brain damage and paranoia.
Backers of the pot-potency measure announced Friday that they're unable to raise enough money to advertise what would have been the most serious attempt yet to roll back Colorado's 2012 pot-legalization amendment.
The measure was cleared for the ballot last month by the Colorado Supreme Court. But its supporters said they could not raise enough money to advertise it.
Supporters called on elected officials to "recognize the harm that legalized pot has had on our state."
A marijuana industry group formed to oppose the measure applauded the decision Friday to abandon the potency campaign, which would have set a limit of 16 percent or less THC in any Cannabis product sold in the state.