Isham Green Harris was an American politician

Politics of the United States

The United States is a federal constitutional republic, in which the President of the United States , Congress, and judiciary share powers reserved to the national government, and the federal government shares sovereignty with the state governments.The executive branch is headed by the President...

. He served as Governor of Tennessee from 1857 to 1862 and as a U.S. Senator

United States Senate

The United States Senate is the upper house of the bicameral legislature of the United States, and together with the United States House of Representatives comprises the United States Congress. The composition and powers of the Senate are established in Article One of the U.S. Constitution. Each...

 from 1877 until his death.

As governor, his decision not to respond to President

President of the United States

The President of the United States of America is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces....

 Abraham Lincoln

Abraham Lincoln

Abraham Lincoln was the 16th President of the United States, serving from March 1861 until his assassination in April 1865. He successfully led his country through a great constitutional, military and moral crisis – the American Civil War – preserving the Union, while ending slavery, and...

's request for troops to quell the secession of the Southern states helped make Tennessee the last state to join the Confederacy

Confederate States of America

The Confederate States of America was a government set up from 1861 to 1865 by 11 Southern slave states of the United States of America that had declared their secession from the U.S...

. During the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

, Harris served as staff officer in the Confederate Army.

Following the defeat of the CSA, Harris fled to Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, but returned to Memphis after learning most Confederate officials were not being prosecuted for treason

Treason

In law, treason is the crime that covers some of the more extreme acts against one's sovereign or nation. Historically, treason also covered the murder of specific social superiors, such as the murder of a husband by his wife. Treason against the king was known as high treason and treason against a...

.