(a)
In general
To carry out this chapter, the Secretary may cooperate with other Federal agencies, States or political subdivisions of States, national governments of foreign countries, local governments of foreign countries, domestic or international organizations, domestic or international associations, Indian tribes, and other persons.
(d)
Cooperation in program administration
The Secretary may cooperate with State authorities, Indian tribe authorities, or other persons in the administration of regulations for the improvement of livestock and livestock products.