Second party sale.
That is called ``providing alcohol to a minor'' or "social supply", and it is illegal in many places. It can result in fines, criminal charges, and other legal consequences for the adult.
no
You can report it to the police as it is an offence.
True
True
That depends on the jurisdiction.
The Michigan statute of limitations for a criminal charge of a minor in possession of alcohol is limited to the minor becoming 18 years old. Once the minor becomes an adult the charge will no longer be valid.
The laws vary from place to place. In a few states, children are allowed to have alcohol under the supervision of their parents, not any other adult. There are still age limits in effect and the exceptions are very limited. Any adults giving alcohol to a minor can go to jail and or have a fine. And the 'adult' supervision can get arrested as well - and charged with various things including 'contributing to the delinquency of a minor,' 'providing alcohol to a minor,' etc.
They are assisting a police officer in the enforcement of the alcoholic beverage code.
Statutory Rape
Then the minor will have alcohol.
Yes but ONLY if there is an adult over the age of 21 monitoring them. Preferably the parents or legal guardians. The person who purchased the alcohol and allowed the minor to have it and left them unattended would be contributing to the delinquency of a minor, which is against the law.