Any individual who, pursuant to a contract or any other arrangement, performs functions or activities of the Corporation, under the direct supervision of an officer or employee of the Corporation, shall be deemed to be an employee of the Corporation for purposes of title 18 and this chapter. Any individual who, pursuant to a contract or any other agreement, acts for or on behalf of the Corporation, and who is not otherwise treated as an officer or employee of the United States for purposes of title 18 shall be deemed to be a public official for purposes of section
201 of title
18.