H.R. 4619 would authorize the sale of as many as two Virginia-class submarines to Australia from the inventory of the Department of Defense (DoD) within 15 years after enactment and would authorize the transfer or export of defense services to the governments of Australia and the United Kingdom and to private-sector entities in those countries. The sales would support the trilateral security partnership between Australia, the United Kingdom, and the United States, known as AUKUS. Australia would pay for all costs associated with the transfer of the submarines.