John Quincy^^Adams
John Quincy Adams as secretary of state from 1817 to 1825 helped to formulate the
Monroe Doctrine
of James Monroe; he served as the sixth president of the United States from 1825 to 1829 and after his presidency from 1831 to 1848 in the House of Representatives advocated anti-slavery measures.
This diplomat and politician affiliated with Federalist, Democratic-Republican, National Republican, and later Anti-Masonic and Whig parties. Abigail Smith Adams bore John Quincy Adams was the son of John Adams, later the second president of United States. Many international negotiations most famously involved him as a diplomat.
He proposed a grand program of modernization and educational advancement but lacked ability to get it through Congress. Late in life as a congressman, he led opponents of the slave power and argued that if a civil war ever broke, then war powers of the president ably abolished slavery; Abraham Lincoln followed this policy in the
Emancipation Proclamation
of 1863.
To date, only this president of the United States subsequently served as a congressman.