4 U.S.C. § 101
Section 101 · Oath by members of legislatures and officers
Amended 1 time on record
Applied in 14 court decisions — leading case Henderson v. United States (1956)
Most recently applied in Citizens in Charge, Inc. v. Husted (January 2016)
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.
Every member of a State legislature, and every executive and judicial officer of a State, shall, before he proceeds to execute the duties of his office, take an oath in the following form, to wit: “I, A B, do solemnly swear that I will support the Constitution of the United States.”