The Colorado Association of Chiefs of Police and the County Sheriffs of Colorado were so upset over the initial draft of House Bill 1317 that the groups were threatening to write a letter to Attorney General Eric Holder asking him to intervene — the nuclear option.

The bill’s sponsor is hoping that a handful of amendments, set to be introduced when the bill is heard by the House State Affairs Committee early Wednesday morning, will mollify law enforcement’s concerns.

The original bill would have gotten rid of “vertical integration”, the model now in place for medical marijuana centers that allows retail operations to grow the marijuana they sell. The police chiefs and sheriffs believe that model is working and that deviating from it would give rise to a black market of unregistered growers.