So in some states it's sixteen, in some states it's eighteen, in some states twenty one er and Reagan thought it would be quite a good idea if they had uniformity across America er in which, you know, that they would raise the drinking age to twenty one  er and this would then er reduce the incidence of teenage drunk driving  and if you've ever been in an American bar you will know you're very often  funnily enough they don't ask me so much these days but you're very often asked to prove your age, you know, er and you have to produce your driver's licence and all the rest of it  erm and so he increasing