Lewis Cass

When the War of 1812 began against the United Kingdom, he took command of the 3rd Ohio Volunteer Regiment. He became colonel of the 27th United States Infantry Regiment on February 20, 1813. Soon after, he was promoted to brigadier general in the Regular Army on March 12, 1813. Cass took part in the Battle of the Thames, a defeat of British and Native Indian forces. Cass resigned from the Army on May 1, 1814.

As a reward for his military service, Cass was appointed Governor of the Michigan Territory by President James Madison on October 29, 1813, serving until 1831. As he was frequently traveling on business, several territorial secretaries often acted as governor in his place. During this period, he helped negotiate and implement treaties with Native American tribes in Michigan, by which they ceded substantial amounts of land. Some were given small reservations in the territory.

In 1817, Cass was one of the two commissioners (along with Duncan McArthur), who negotiated the Treaty of Fort Meigs, which was signed on September 29 with several Native American tribes of the region, under which they ceded large amounts of territory to the United States.[4] This helped open up areas of Michigan to settlement by Euro-Americans. That same year, Cass was named to serve as Secretary of War under President James Monroe, but he declined the appointment.

In 1820, Cass led an expedition to the northwestern part of Michigan Territory, in the Great Lakes region in today's northern Minnesota. Its purpose was to map the region and locate the source of the Mississippi River. The headwater of the great river was then unknown, resulting in an undefined border between the United States and British North America, which had been linked to the river. The Cass expedition erroneously identified what became known as Cass Lake as the Mississippi's source. It was not until 1832 that Henry Rowe Schoolcraft, the Cass expedition's geologist, identified nearby Lake Itasca as the headwater of the Mississippi.

On August 1, 1831, Cass resigned as governor of the Michigan Territory to take the post of Secretary of War under President Andrew Jackson, a position he would hold until 1836. Cass was a central figure in implementing the Indian removal policy of the Jackson administration; Congress had passed the Indian Removal Act in 1830. While it was directed chiefly against the Southeastern tribes, especially the Five Civilized Tribes, it also affected tribes in Ohio, Illinois and other areas east of the Mississippi River. Most were forced to Indian Territory in present-day Kansas and Oklahoma, but a number of bands negotiated being allowed to remain in Michigan.[1]

Lewis Cass

At the end of his term, President Jackson appointed Cass to succeed Edward Livingston as the U.S. Minister to France on October 4, 1836. He presented his credentials on December 1, 1836, and served until he left his post on November 12, 1842, when he was succeeded by William R. King, who later became the 13th Vice President of the United States under President Franklin Pierce.

In the 1844 Democratic convention Cass stood as a candidate for the presidential nomination, losing on the 9th ballot to dark horse candidate James K. Polk.

Cass was elected by the state legislature to represent Michigan in the United States Senate, serving in 1845-48. He served as chairman of the Committee on Military Affairs in the 30th Congress.

In 1848, he resigned from the Senate to run for president in the 1848 election. William Orlando Butler was selected as his running mate.[5] Cass was a leading supporter of the doctrine of popular sovereignty, which held that the American citizens who lived in a territory should decide whether to permit slavery there.[6] His nomination caused a split in the Democratic Party, leading many antislavery Northern Democrats to join the Free Soil Party, which nominated former President Martin Van Buren.

After losing the election to Zachary Taylor, Cass was returned by the state legislature to the Senate, serving from 1849-57. He was the first non-incumbent Democratic presidential candidate to lose an election and the first Democrat who was unsuccessful in his bid to succeed another Democrat as President. Apart from James Buchanan's election to succeed Franklin Pierce in 1856, subsequent Democrats who attempted election to succeed another Democrat as President all failed in their bid to do so.

Cass made another bid for president in 1852 but neither he nor rival Democratic contenders Buchanan and Stephen Douglas secured a majority of delegates' votes at the Democratic Convention in Baltimore, and the party went with Franklin Pierce instead.

On March 6, 1857, President James Buchanan appointed Cass to serve as Secretary of State as a consolation prize for his previous presidential runs. Although retaining incumbent Secretary of State William L. Marcy was considered the best option by many, Buchanan made it clear that he did not want to keep anyone from the Pierce Administration. Moreover, Marcy had opposed his earlier presidential bids, and was in poor health in any event, ultimately dying in July 1857. Cass, aged 75, was seen by most as too old for such a demanding position and was thought to be likely be little more than a figurehead. Buchanan, weighing many of the other options for Secretary of State, considered that Cass was the best choice to avoid political infighting and sectional tensions. Buchanan, who did not particularly like Cass, nonetheless wrote a flattering letter offering him the post of Secretary of State, commenting that he was remarkably active and energetic for his advanced age. Cass, who was retiring from the Senate, but not eager to leave Washington and return home to Michigan, immediately accepted.

Aware of his age and physical limitations, Cass agreed to delegate most of his powers as Secretary of State to an Assistant Secretary of State or the president himself. He also promised to refrain from making anti-British remarks in public (having served in the War of 1812, Cass had a low opinion of London). Most assumed Cass was a temporary Secretary of State until a younger, more fit man could be found, however, he ultimately served for all but the final four months of Buchanan's administration. As expected, the aged Cass largely delegated major decision-making to subordinates, but eagerly signed his name on papers and dispatches penned by them.[4]

While sympathetic to American filibusters in Central America, he was instrumental in having Commodore Hiram Paulding removed from command for his landing of Marines in Nicaragua and compelling the extradition of William Walker to the United States.[7] Cass attempted to buy more land from Mexico, but faced opposition from both Mexico and congressional leaders. He also negotiated a final settlement to the Clayton–Bulwer Treaty, limiting U.S. and British control of Latin American countries.[2] The chiefs of Raiatea and Tahaa in the South Pacific, refusing to accept the rule of King Tamatoa V, unsuccessfully petitioned the United States to accept the islands under a protectorate in June 1858.[8]

Cass resigned on December 14, 1860, because of what he considered Buchanan's failure to protect federal interests in the South and failure to mobilize the federal military, actions that might have averted the threatened secession of Southern states.[9]

Through his daughter Matilda, he was the grandfather of Elizabeth Cass Ledyard (wife of Francis Wayland Goddard);[13] Henry Brockholst Ledyard Jr. (who was president of the Michigan Central Railroad);[14][15] Susan Livingston Ledyard (wife of Hamilton Bullock Tompkins);[16] Lewis Cass Ledyard (a prominent lawyer with Carter Ledyard & Milburn who was the personal counsel of J. Pierpont Morgan);[17][18] and Matilda Spancer Ledyard.[19]

Cass's great-great grandson, Republican Thomas Cass Ballenger, represented North Carolina's 10th Congressional District from 1986 to 2005.[20]