President Thomas Jefferson agrees to buy Louisiana from the French for $11,250,000 plus assumption of up to $3,750,000 in claims of U. S. citizens against France
Congress passes the Tariff Act of 1833, sometimes called the Compromise Tariff, proposed by Henry Clay and calling for the gradual reduction of tariffs to the 1816 levels, ending the Nullification Crisis
U. S. President James Polk requests 2 million dollars to purchase land from Mexico following the Mexican-American War. David Wilmot of Pennsylvania attaches the "Wilmot Proviso" to this bill. It passes in the House but is tabled in the Senate.