At the beginning of the Civil War, as the number of dead increased daily, a force of opposition to the war efforts began to intensify in the Congress and in the voices of the American people. Abraham Lincoln, in an effort to silence the Southern sympathizers, or “Copperheads,” suspended the writ of habeas corpus, a clause of the Constitution that forbids unlawful imprisonment. The suspension of this clause was first mandated only in the state of Maryland due to its proximity to the capital, but in September of 1861...