Congress passes the "Child On Line Protection Act", which essentially states that it is a crime to put "obscene material" on the internet with intent to place said obscene material on the internet. Obscene materials is not clearly defined. Oscar, places a "pornographic movie" on the internet which is easily accessible for a fee. Oscar is arrested for violating the "Child On Line Protection Act". In answering the question discuss the elements of a crime with special emphasis on "constitutional limitations"