A study should be made before more states legalize.
I am confident there has been sufficient research performed on the matter previously. My tax dollars don't need to go towards yet another $14.3M government grant to some liberal jackass college professor that reveals that pot smokers are mostly tranquil, happy, horny, and/or hungry; and habitual pot smokers have a streak of laziness, social and personal irresponsibility, a general lack of motivation, and cognitive difficulties.
I would also like to see previous research on the mental disorder of homosexuality brought up... but that is another topic, completely.
Now come on, since when do liberals wait for ‘studies’? The downtrodden and oppressed can’t wait for studies damn it!