Qualitative data on enforcement of the minimum drinking age in the Uni
ted States were obtained through indepth interviews with law enforceme
nt officers in May and June 1992. Interviews were conducted with 37 su
pervisory and line law enforcement personnel in 15 city and county law
enforcement agencies in four States. The selected agencies had varyin
g levels of enforcement as measured by arrest rates. Interviews focuse
d on the social and political context of enforcement of the drinking a
ge, constraints to enforcement, and officers' recommendations for impr
oving enforcement efforts. Officers generally perceive an acceptance o
f youth drinking by many segments of their communities, and they do no
t receive significant encouragement from community members to increase
enforcement efforts. political factors are thought to play some role
in determining enforcement levels, especially in sheriffs' departments
. Reported constraints on enforcement of the minimum drinking age incl
ude resource limitations, a number of practical problems, perceptions
that punishments are inadequate, time and effort required for processi
ng and paperwork, and the low status accorded enforcement of the minim
um drinking age. Officers report facing a number of evidentiary and pr
ocedural challenges. Officers suggested a number of ways in which enfo
rcement of the minimum drinking age could be improved.