Insurrection can disqualify a candidate for public office
Even as the Civil War raged, Union leaders were busily restructuring the nation for its survival. Several constitutional amendments were essential. The most well-known is the 13th Amendment that made slavery illegal. Lesser known is Section 3 of the 14th Amendment, which sanctions those federal and state public office holders who violate their oath of office by participating in rebellion and insurrection against the government.