Grace Hood

Colorado responded to the mass shootings in Aurora, Colo., and Newtown, Conn., by passing new gun control measures last month. That's not sitting well with several gun-related businesses in the Centennial State, where four companies have announced plans to relocate all or some of their operations.

An obscure tax code provision crafted for drug dealers is giving state-licensed medical marijuana dispensaries a headache.

In Colorado, federal income tax rates for dispensaries can soar as high as 70 percent because of a tax code section that does not allow businesses to claim certain deductions.

The section is known as 280E, and it was originally written for illegal drug traffickers. But today it's a thorn in the side of licensed dispensary owners like Erica Freeman.