The U.S. Justice Department has intervened in a lawsuit that claims the Houston-based stevedore, Jacintoport International LLC, a division of Seaboard Corp., overcharged for loading food aid cargo. Jacintoport was awarded a warehousing and logistics contract for the storage and redelivery of humanitarian food aid by the U.S. Agency for International Development (USAID) in 2007. It is described in the lawsuit as a "key logistics hub in the overseas transportation of Uni...