Thus, President Lincoln pursuing the Civil War to save the Republic was constitutional, as was President Clinton's executive order. [Author's note: Unfortunately, I did not save any information as to the contents of the Executive Order referenced herein.] The characterization of Lincoln as "Dictator" and of Clinton as "Emperor" is nothing more than ideological nonsense, comparable to Mrs. Clinton's complaints of a "vast, right wing conspiracy."
Incidentally, the seceding states in the Civil War were guilty of treason, according to the Constitution, for having levied war against the United States. So much for lawful secession.