Conflicts of interest

No person licensed or authorized by the Secretary to perform any official function under this chapter, or employed by the Secretary in otherwise carrying out any of the provisions of this chapter, shall, during the term of such license, authorization, or employment, (a) be financially interested (directly or otherwise) in any business entity owning or operating any grain elevator or warehouse or engaged in the merchandising of grain, or (b) be in the employment of, or accept gratuities from, any such entity, or (c) be engaged in any other kind of activity specified by regulation of the Secretary as involving a conflict of interest: Provided, however, That the Secretary may license qualified employees of any grain elevators or warehouses to perform official sampling functions, under such conditions as the Secretary may by regulation prescribe, and the Secretary may by regulation provide such other exceptions to the restrictions of this section as the Secretary determines are consistent with the purposes of this chapter. The provisions of this section shall not prevent an official agency or State agency delegated authority under this chapter from engaging in the business of weighing grain.