19 U.S. Code § 1624 - General regulations
In addition to the specific powers conferred by this chapter the Secretary of the Treasury is authorized to make such rules and regulations as may be necessary to carry out the provisions of this chapter.
Provisions similar to those in this section were contained in act Sept. 21, 1922, ch. 356, title IV, § 623, 42 Stat. 988. That section was superseded by section 624 of act June 17, 1930, comprising this section, and repealed by section 651(a)(1) of the 1930 act.