I am constantly amazed at how many conservatives are adamant about their rights especially when it comes to the 2nd Amendment, yet will immediately dismiss others rights to the use of a plant which is not addictive, does not increase peoples desire for violence as alcohol does to soem people. Considering the 9th and 10th Amendments, the criminlization of marijuana is unconstitutional as the people have never consented to having their rights to use chemical substances abridged in any way.
If you scratch under their surface, you'll find that a good portion of the anti-pot crowd are gun-grabbers or, at best, ambivalent about gun rights.