Colorado aviation  

Aside from any state law pertaining to the use of marijuana within a state, it is important to be aware that the FAA's regulation [14 CFR § 120.33(b)], expressly prohibits you from performing a safety-sensitive function for a certificate holder while having a prohibited drug, which includes marijuana and marijuana metabolites, in your system. If you are a pilot, a verified positive drug test result for marijuana on a required DOT/FAA test will make you unqualified to hold an FAA-issued medical certificate.