Do Tobacco 21 Laws Really Work?

One preliminary study seems to think so about California's law that raised the age limit to buy tobacco and e-cigarettes from 18 to 21 as of June 9, 2016.  But the devil is really in the details.  The study did not, I repeat, did NOT, look at actual teen smoking rates, only the degree of retailer compliance as measured by decoys, which did in fact improve since then in terms of sales to people under 18.

The two problems with this logic are 1) it is not necessary to raise the age limit to 21 to discourage retailers from selling to people under 18, as simply better enforcement against scofflaw vendors would do the trick, and 2) survey data do not really show any decrease in teen smoking that can be unambiguously linked to the policy change, whether in California or elsewhere with a Tobacco 21 law.  Teen smoking dropped nationwide from 2015 to 2017, and while it dropped somewhat faster in California, keep in mind that California also raised their cigarette tax significantly during that time, by $2.00/pack, and Pennsylvania saw an even larger drop in teen smoking despite keeping the age limit 18 and a cigarette tax hike of $1.00/pack, only half as large.

As we have noted before based on survey data for the past few years, there is really no robust correlation between a state or local smoking age (whether 18, 19, or 21) and the teen (or adult) smoking rate.  The strongest predictors of both teen and adult smoking are the tax/price of cigarettes and the prevailing social attitudes towards smoking, and in fact prices seem to have a larger effect on young people than adults.  It is practically axiomatic.  Retailer compliance is also inversely correlated with smoking by people under 18, but again it has proven to be entirely possible achieve nearly 100% compliance without raising the smoking age any higher than 18, as long as there is the political will for it.  And it doesn't even require the criminal justice system at all, since the best tobacco-control success stories involved only administrative penalties (i.e. fines and/or tobacco license suspensions) against rogue vendors.  Nor does it require criminalizing young people themselves.

If anything, if NYC is any indication, retailer compliance actually deteriorated following their age limit hike from 18 to 21 in 2014.  This was in spite of heavy crackdowns against contraband tobacco during that time.  In any case, while teen smoking rates declined in NYC following the law change, they did not drop any faster than the rest of the state or the nation as a whole, in fact they declined at a slower rate in NYC compared with the control locations, and teen vaping actually increased despite the fact that the law applied equally to e-cigarettes as well as combustible cigarettes.  If that's "success", we would really hate to see what failure looks like.

And in fact, this also once again calls into question how effective the 21 drinking age (and now toking age in some states) is as well.  Spoiler alert:  not very.  Thus, if there is a silver lining to the recent hike in the smoking age to 21 in some states and localities, it is that re-running this same failed social experiment with a different age-restricted psychoactive substance only to see it fail yet again in more modern times, a fortiori, is probably the strongest evidence against the very concept of such ridiculously high age limits in general.  If you give the pro-21 crowd enough rope...