President James Monroe and Secretary of State John Quincy Adams were credited with the accomplishments.

A letter signed by many members of congress expressing "Gratitude, amity and brotherhood with Great Britain" was addressed to British Prime Minister Robert Jenkinson, 2nd Earl of Liverpool, British Secretary of State for War and the Colonies Henry Bathurst, 3rd Earl Bathurst, British foreign secretary Robert Stewart, Viscount Castlereagh and Britain's minister plenipotentiary and envoy extraordinaire to the United States Charles Bagot.

The letter also attacked King Louis XVIII of France for insulting remarks he had made towards American diplomats and about the United States, as well as his refusal to pay reparations owed to the United States from damages incurred during the Quasi-War.

The letter was signed in December 1818 by Joel Abbot, Thomas W. Cobb, Zadock Cook, Joel Crawford, John Forsyth, William Terrell, Charles Tait, William Smith, John Gaillard, Henry Middleton, William Lowndes, James Ervin, Joseph Bellinger, Starling Tucker, Eldred Simkins, Elias Earle, Wilson Nesbitt, Stephen Decatur Miller, Montfort Stokes, Nathaniel Macon, Lemuel Sawyer, Joseph Hunter Bryan, Thomas H. Hall, Jesse Slocumb, James Owen, Weldon Nathaniel Edwards, James Stewart, James Strudwick Smith, Thomas Settle, George Mumford, Daniel Munroe Forney, Felix Walker, Lewis Williams, John J. Crittenden, Isham Talbot, David Trimble, Henry Clay, Richard Mentor Johnson, Joseph Desha, Anthony New, David Walker, George Robertson, Richard Clough Anderson Jr., Tunstall Quarles, Thomas Speed, William Hendricks, James Noble, Waller Taylor, John Eaton, John Williams, John Rhea, William Grainger Blount, Francis Jones, Samuel E. Hogg, Thomas Claiborne, George W.L.

Marr, George Poindexter, Prentiss Mellen, Harrison Gray Otis, Enoch Lincoln, Jonathan Mason, Nathaniel Silsbee, Jeremiah Nelson, Timothy Fuller, Elijah H. Mills, Samuel Clesson Allen, Henry Shaw, Zabdiel Sampson, Walter Folger Jr., Marcus Morton, Benjamin Adams, Solomon Strong, Nathaniel Ruggles, John Holmes, Ezekiel Whitman, Benjamin Orr, John Wilson, Thomas Rice, Joshua Gage and Albion Parris, all of whom also voted to ratify both of the aforementioned treaties.

This was significant because the governors and the members of congress were from different regions (both Massachusetts and several southern states were represented), and because signers came from both the Whig Party and the Democratic-Republicans.

Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress.