Michael Leib (January 8, 1760December 22, 1822) was an American physician and politician from Philadelphia. He served as a surgeon in the Philadelphia Militia during the American Revolutionary War. He served as a Democratic-Republican member of the Pennsylvania House of Representatives three times; from 1795 to 1798, 1806 to 1808 and 1817 to 1818. He served as a member of the United States House of Representatives for Pennsylvania's 2nd congressional district from 1799 to 1803 and for Pennsylvania's 1st congressional district from 1803 to 1806. He served as a member of the United States Senate for Pennsylvania from 1809 to 1814. He also served as a member of the Pennsylvania State Senate for the 1st district from 1818 to 1821. Biography Leib was born in Philadelphia, Pennsylvania to George and Dorothea Leib. He studied and practiced medicine in Philadelphia, received a commission as a surgeon in the Philadelphia Militia in 1780 and served during the American Revolutionary War. Following the war, Leib returned to Philadelphia and continued the practice of medicine. He served on the staff of several Philadelphia hospitals and was a member of the committee of correspondence in 1793. He was one of the organizers of the German Republican Society in Philadelphia. He represented the large German immigrant population in Philadelphia. He and Benjamin Bache became a part of a radical faction of the Society which led to a schism in the Society over the Whiskey Rebellion. Leib and his brother volunteered to join the military force sent to control the insurrection. He was elected as a member of the Pennsylvania House of Representatives and served from 1795 to 1798. He was elected to the United States House of Representatives from Pennsylvania's 2nd congressional district and served from 1799 to 1803. He continued in the United States House of Representatives from Pennsylvania's 1st congressional district from 1803 to 1806. He resigned to return to the Pennsylvania House and served from 1806 to 1808. He served on the committee of correspondence for the Chesapeake–Leopard affair in June 1807. From 1805 to 1809, a power struggle ensued in the Pennsylvania Republican Party with Leib and William J. Duane on one side and Simon Snyder on the other. Duane and Leib represented the interests of Philadelphia, such as banking, trade and shipping, whereas Snyder represented the interests of rural Pennsylvania such as land ownership. In 1807, he was elected Brigadier-General of