United States Postal Service Shipping Equity Act This bill authorizes the mailing of alcoholic beverages by certain entities in accordance with the delivery requirements otherwise applicable to a privately carried shipment. The authorization applies to an entity (including a winery, brewery, beverage distilled spirits plant, or other wholesaler, distributer, importer, or retailer of alcoholic beverages) that has registered with, obtained a permit from, or obtained approval of an application from the Department of the Treasury. The bill directs the U.S. Postal Service (USPS) to prescribe regulations (1) requiring direct delivery to a duly authorized agent at a postal facility or to the addressee, who must be at least 21 years of age and present a valid, government-issued photo identification at the time of delivery; (2) prohibiting such alcoholic beverages from being for resale or any other commercial purpose; and (3) requiring such entity to certify that the mailing is not in violation of applicable laws or regulations and to provide other information as directed by the USPS. The U.S. district courts shall have jurisdiction to render judgment upon any claim brought by a state, local, or tribal government against the USPS of a violation of state, local, or tribal law regarding the sale, mailing, transportation, or importation of alcoholic beverages into any U.S. state, territory, or district. The USPS shall not be liable for interest prior to judgment or for punitive damages.