Insurrection

noun
in·​sur·​rec·​tion | \ ˌin(t)-sə-ˈrek-shən

: an act or instance of revolting against civil authority or an established government

Penalty:

18 U.S. Code § 2383 - Rebellion or insurrection:

Whoever incites, sets on foot, assists, or engages in any rebellion or insurrection against the authority of the United States or the laws thereof, or gives aid or comfort thereto, shall be fined under this title or imprisoned not more than ten years, or both; and shall be incapable of holding any office under the United States.