First of all, although all states do have a 21 year old minimum for buying and drinking alcohol, it is not a federal law. This means that each state is free to create its own laws, punishments, and agencies.
Title: Leinster Flag/ Naval Jack. Description: This flag represents one of the four provinces of Ireland, Leinster, whose capital is Dublin. The flag was previously used by the United Irishmen in 1798, Daniel O'Connel's Repeal of the Union campaign in the 1830s and 1840s, and the Irish Republican Brotherhood (IRB).
Flag of Arizona. The state flag of Arizona represents the copper star of Arizona rising from a blue field in the face of a setting sun (quote from legislation). In 1911 a rifle team from the Arizona Territory was scheduled for a competition match in Ohio and needed a flag to represent their team.