Parents who buy their adult children alcohol at the World Cup risk being sent to prison under US drinking laws. While teenagers can enjoy an alcoholic drink from the age of 18 in the UK, the minimum age in the US is 21 and anyone "supplying" or "furnishing" alcohol to a minor can face severe penalties. It has been estimated that as many as 30,000 England football fans could be flying out to attend this summer's World Cup and parents taking their adult children have been warned about the laws