21 U.S.C. § 141
Prohibition of importation without permit
On and after May 16, 1927 , the importation into the United States of milk and cream is prohibited unless the person by whom such milk or cream is shipped or transported into the United States holds a valid permit from the Secretary of Health and Human Services.
( Feb. 15, 1927, ch. 155, § 1 , 44 Stat. 1101 ; 1940 Reorg. Plan No. IV, § 12, eff. June 30, 1940 , 5 F.R. 2421, 54 Stat. 1237 ; 1953 Reorg. Plan No. 1, § 5, eff. Apr. 11, 1953 , 18 F.R. 2053, 67 Stat. 631 ; Pub. L. 96–88, title V, § 509(b) , Oct. 17, 1979 , 93 Stat. 695 .)