"The Lincoln regime destroyed the system of federalism, or states' rights, that was established by the founding fathers. After the war, the union was no longer voluntary, and all states, North and South, became mere appendages of Washington, DC. Lincoln illegally suspended the writ of habeas corpus and imprisoned tens of thousands of political dissenters without due process; waged total war with the bombing, plundering, and mass murder of some 50,000 of his own citizens; signed ten tariff-raising bills; imposed heavy "sin taxes" on alcohol and tobacco; introduced the first federal income-tax and military-conscription laws; introduced an internal-revenue bureaucracy for the first time; executed thousands of accused deserters from the army; shut down hundreds of opposition newspapers in the Northern states; went off the gold standard and nationalized the money supply; introduced massive corporate-welfare schemes; deported an opposition member of Congress; and exploded the public debt, among other sins. By "targeting and butchering [Southern] civilians," Murray Rothbard wrote in his essay, "America's Two Just Wars: 1775 and 1861" (in John Denson, ed., The Costs of War), "Lincoln and Grant and Sherman paved the way for all the genocidal horrors of the monstrous 20th century." They "opened the Pandora's Box of genocide and the extermination of civilians …""
...But other than that, he was a great president...;-)
Thomas DiLorenzo is offering an online course at the Mises institute in January.