H.R. 3011 would allow the United States Postal Service to mail alcoholic beverages, ending a current federal prohibition on this service. The bill applies to registered alcohol producers, wholesalers, distributors, importers, and retailers who comply with regulations set by the Postal Service, and it requires recipients to be at least 21 years old with valid government-issued photo identification presented at delivery. The legislation does not preempt state or local laws that may restrict alcohol shipments, and the Postal Service would face liability for violating state and local alcohol regulations in the same manner as private individuals. The new authority would take effect either when the Postal Service issues implementing regulations or within two years of the bill's enactment, whichever comes first.