Snopes:
Important to note, IMHO, that it's the feds primarily that outlaw gun possession by marijuana users, definitely a progressive trojan horse, and something that needs revision.What's True
Under federal law it is illegal for a marijuana user to buy or possess a firearm, even if that user lives in a state which has legalized marijuana use.
What's False
It is not the case that states have been legalizing cannabis use and subsequently legislating to bar cannabis users from owning guns. Rather, a pre-existing and unchanging federal prohibition on controlled substances, including marijuana, prohibits the possession or purchase of firearms by anyone who uses those controlled substances, including marijuana. https://www.snopes.com/fact-check/ca...arijuana-guns/