A crime is an act that the government has determined to be injurious to the public and which can therefore be prosecuted in a criminal proceeding. Crimes encompass felonies and misdemeanors.
Police power refers to the inherent power of governments to impose restrictions on private rights that are reasonably related to the promotion and maintenance of the health, safety, morals, and general welfare of the public.
Unmailable matter refers to materials that the U.S. Postal Service (USPS) cannot accept or transport due to restrictions on size, weight, or content.
