Guess what? Marijuana users are "prohibited persons." DHS also can gain access to both the CCW and MMJ databases whenever they wish . . . and if the same individual has both a CCW permit and a MMJ card that is a federal felony and they risk arrest and prosecution at any time, arbitrarily, at the government's whim.
I'd also like to see your source for this statement. I have it first-hand from someone who works at the MMJ registry that the database is protected by the Colorado State Constitution and is not available for search by any LE agency.
"America is at that awkward stage: It's too late to work within the system, and too early to shoot the bastards."
-Claire Wolfe
"I got a shotgun, rifle, and a four-wheel drive, and a country boy can survive."
-Hank Williams Jr.