Warning Long story below
Here in Arkansas its already like that (except the local police monitor usage vs. Dept of Homeland Security).
We have a set qty that we can get within a certain period of time (month). Must fill out a form, must give a copy of drivers license (or other picture ID). They run you through a database to see if you have had your max allowable amount.
I have 1 medacine that I have to take for my allergies (its the only one that works). Unfortunatly its on the list and the first time I had to get it (after the law went into effect) I was having a BAD allergy attack (my eyes were swelling shut and all sorts of other good stuff).
These come on really quick for me and I have around 15 minutes to take a medacine for it to be affective (otherwise it takes several hours for me to get over the symptoms). Unfortunatly (or fortunatly depending on how you look at it) I had not had one for several months and was out of the medacine I take.
I ended up argueing with the girl behind the counter because she knew something had changed with it but was having to check with someone else to see if it could be sold, They had to call someone else who called someone else, etc). This took somewhere in the neighborhood of 30-40 minutes to get figured out. Meanwhile my eyes have swollen shut (and my wife had come and drive me home because I didnt get the medacine in the time needed. I told them flat out that I would stay and take care of whatever paperwork (or whatever) but I needed to take them as I was having an allergy attack (the main pharm. guy finally gave me 2 pills about 30 minutes after this started because he saw that I was having some problems. Bad thing was it was a bit too late and I still had to call the wife
Now I know some will ask. Why didnt you leave and go to another store. Well the nearest store was about 10 miles away and Oh yeah they had my drivers license (took it to get info and refused to give it back until they had the info they needed for the transaction. Only problem was they had no idea what info they needed.
A fun fact was at the time of this I was working with the Juvenile Court (with teens with drug problems).
YEAH love the new laws regarding it. Doc has now given me a prescription in case I need more than the "legal" amount in a month.
Just a FYI Hot Springs Arkansas is one of the biggest producers of meth in the US (ranks 3rd in the country I believe).