Has any state developed a breath test to determine the level of wacky weed for a driver?
If not, and when that happens, they will make it legal in most states. That way they can arrest and collect fines.
When I was out visiting in California, almost a year ago, I heard a news report talking about a mouth swab test that would pick up thc and determine recent use instead of the blood test that was positive for much longer than the effects of the thc, but not heard any more about it since then.