I received an advertisement in my mailbox for a dispensary located in a different state (Michigan), where marijuana is legal. However, where I live it is illegal for both recreational and medical use. How is this legal? Is it a case of first amendment? But it's a drug, and alcohol and tobacco are heavily regulated in advertising.
I can understand an advertisement for something like a casino, where gambling might not be allowed in the mailee's jurisdiction, but the gambling would only be conducted in the business - they're not potentially bringing it home. Whereas the whole point of a dispensary is to sell products, which are not consumed in the store (public consumption is illegal in Michigan). Advertising across state lines would appear to be a federal issue - and federally it would still be illegal.
I did find this site, but of course they do not have Indiana. Michigan appears to have no restrictions.
EDIT: One of the suggested questions (which of course did not come up in earlier searches referenced this court case, which seems to cover the situation I was looking for, although I am still trying to interpret it.