United States | United Kingdom | Republican Party (United States) | Democratic Party (United States) | United States House of Representatives | President of the United States | United Nations | United States Senate | United States Navy | United States Army | Supreme Court of the United States | United States Air Force | Native Americans in the United States | White House | United States Congress | Parliament of the United Kingdom | House of Lords | 66th United States Congress | Prime Minister of the United Kingdom | 74th United States Congress | 18th United States Congress | 73rd United States Congress | 54th United States Congress | 61st United States Congress | United States Marine Corps | United States Department of Defense | 64th United States Congress | House of Representatives | 65th United States Congress | 53rd United States Congress |
In 1870, Waddell was elected to the 42nd United States Congress; he was re-elected three times, serving as the chairman of the Committee on Post Offices and Post Roads during his final term in Congress.
He served as chairman of the United States House Committee on Railways and Canals during the Forty-second Congress and United States House Committee on Post Office and Post Roads during the Forty-third Congress.
He served as chairman of the United States House Committee on Post Office and Post Roads during the Sixty-eighth through the Seventieth Congresses.