Approximately 45 of the Nation's special agents are assigned to the states and territories in the Pacific Region. Responsibilities under the Lacey Act of 1900 originally consisted of prohibiting the interstate commerce of illegally taken game and preventing the importation of injurious wildlife into the United States. However, the complexity of investigations has changed through the years from primarily petty offense violations to felony violations involving illegal trafficking in wildlife, both within the United States and in foreign countries. Agents now help conserve bald and golden eagles, migratory birds, endangered species, marine mammals, species protected by international treaty or by individual foreign governments, and any wildlife hunted or harassed from aircraft.