The survey also found 70 percent of teens reported drinking at parties hosted by their friends' parents.

There is no state law that punishes adults who were unaware that underage drinking was happening on their property.
Romeo and Juliet laws typically reduce or eliminate the statutory rape penalty in many cases, though the laws vary by state.
To explore this concept, consider the following Romeo and Juliet laws are clauses built into statutory rape laws in some states.
The principal element of this crime, which must be proven beyond a reasonable doubt, is possession, ownership, or control of an alcoholic beverage. Possession of an alcoholic beverage includes situations involving "constructive possession." An example of constructive possession is when a minor is in an automobile where alcohol is readily accessible to any minor passenger in that vehicle. A minor may possess alcohol while in the course and scope of his employment if he is an employee of a license or permittee and the employment is not prohibited by this code.
P.) means that the defendant, being a person under the age of 21 years, has been issued a citation by a police officer or Texas Alcohol Beverage Control Officer for being illegally in possession, ownership, or control of an alcoholic beverage. A minor can be in the proximity of alcohol which belongs to another person, but cannot touch, hold, transport, attempt to purchase, consume, or have any contact with alcohol. A minor may possess alcohol if he is in the visible presence of his adult (over the age of 21 years) parent, guardian, spouse, or other adult to whom he has been committed by a court.