This is underscored on the federal form required for all gun purchases. Question (e.) on the official Firearms Transaction Record[1] asks: "Are you an unlawful user of, or addicted to, marijuana ... or any other controlled substance?" This is immediately clarified by a boldface warning that federal law recognizes no user other than unlawful.

Which, of course, is a direct contradiction to the laws in 30 states — Texas included — that permit at least some form of legal marijuana consumption.

In Texas, the scales aren't exactly balanced. It's easy to anticipate that our state might well be the first in the nation to, say, allow firearms sales from vending machines or roadside kiosks or drive-through gun huts.

Marijuana use, however, is narrowly permitted and tightly controlled[2]. Under a recently enacted law, a single form of low-THC oil may be prescribed for a small subset of patients suffering from severe epilepsy — if they have failed to respond to other specific medications, and if they have authorization from two doctors listed on a state registry (there are four such doctors in Dallas County, two in Tarrant, none in Denton or Collin).

Yet the mere fact that it is legal, even in these very limited instances, is evidence that the states are pretty far out in front of the feds on this particular issue. Many states have far more liberal "medical use" restrictions, and an increasing number are going to the it's-your-own-business "recreational" standard.

It's hard to specify in verifiable numbers how many pot-smoking gun owners there are out there, but there have to be a lot.

There's no national database for who owns a gun — that would violate existing law — but surveys suggest

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