The United States Revenue Cutter Service was established by Secretary of the Treasury Alexander Hamilton in 1790 as an armed maritime law enforcement service. Throughout its entire existence the Revenue Cutter Service operated under the authority of the United States Department of the Treasury. In 1915 the Service merged with the United States Life-Saving Service to form the United States Coast Guard. Look carefully at the logo. You will notice that the outer part is till used today by the US Coast Guard, while the inner part is now used by the US Customs Service.