21 U.S.C. § 101
Section 101 · Suspension of importation of all animals
Amended 1 time on record
Applied in 8 court decisions — leading case Hernandez-cordero v. United States Immigration & Naturalization Service (1987)
Most recently applied in Darlene Hollins v. Walmart Inc. (May 2023)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
Whenever, in the opinion of the President, it shall be necessary for the protection of animals in the United States against infectious or contagious diseases, he may, by proclamation, suspend the importation of all or any class of animals for a limited time, and may change, modify, revoke, or renew such proclamation, as the public good may require; and during the time of such suspension the importation of any such animals shall be unlawful.