U.S. Constitution, Article IV — The States, Section 4
The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion; and on Application of the Legislature, or of the Executive (when the Legislature cannot be convened) against domestic Violence.
Notes
Requires the United States to guarantee every state in the Union a republican form of government and to protect each state against invasion. Requires protection against domestic violence as well, on application of the state's legislature, or of its executive when the legislature cannot be convened.
Use as reference
Lexinter.net | U.S. Const. art. IV, § 4 | https://laws.lexinter.net/constitution/us/article-4/section-4