Question: When did the majority party in the House of Representatives take control of the body which the President calls on for support in his USAF appointments?

Knowledge 1: United States Air Force
The Department of the Air Force is one of three military departments within the Department of Defense, and is managed by the civilian Secretary of the Air Force, under the authority, direction, and control of the Secretary of Defense. The senior officials in the Office of the Secretary are the Under Secretary of the Air Force, four Assistant Secretaries of the Air Force and the General Counsel, all of whom are appointed by the President with the advice and consent of the Senate. The senior uniformed leadership in the Air Staff is made up of the Chief of Staff of the Air Force and the Vice Chief of Staff of the Air Force. [SEP] Knowledge 2: 44th United States Congress
The Forty-fourth United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1875, to March 4, 1877, during the seventh and eighth years of Ulysses S. Grant's presidency. The apportionment of seats in the House of Representatives was based on the Ninth Census of the United States in 1870. For the first time since the American Civil War, the House had a Democratic majority. The Senate maintained a Republican majority. [SEP] Knowledge 3: Compromise of 1877
The Compromise of 1877 was an informal, unwritten deal that settled the intensely disputed 1876 U.S. presidential election. It resulted in the United States federal government pulling the last troops out of the South, and formally ended the Reconstruction Era. Through the Compromise, Republican Rutherford B. Hayes was awarded the White House over Democrat Samuel J. Tilden on the understanding that Hayes would remove the federal troops whose support was essential for the survival of Republican state governments in South Carolina, Florida and Louisiana. The compromise involved Democrats who controlled the House of Representatives allowing the decision of the Electoral Commission to take effect. The outgoing president, Republican Ulysses S. Grant, removed the soldiers from Florida. As president, Hayes removed the remaining troops from South Carolina and Louisiana. As soon as the troops left, many white Republicans also left, and the ``Redeemer ''Democrats took control. They already dominated other state governments in the South. What was exactly agreed is somewhat contested as the documentation is insufficient.
Knowledge 1: United States Air Force
The Department of the Air Force is one of three military departments within the Department of Defense, and is managed by the civilian Secretary of the Air Force, under the authority, direction, and control of the Secretary of Defense. The senior officials in the Office of the Secretary are the Under Secretary of the Air Force, four Assistant Secretaries of the Air Force and the General Counsel, all of whom are appointed by the President with the advice and consent of the Senate. The senior uniformed leadership in the Air Staff is made up of the Chief of Staff of the Air Force and the Vice Chief of Staff of the Air Force. [SEP] Knowledge 2: 114th United States Congress
The One Hundred Fourteenth United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from January 3, 2015, to January 3, 2017, during the final two full years of Barack Obama's presidency. The 2014 elections gave the Republicans control of the Senate (and control of both houses of Congress) for the first time since the 109th Congress. With 248 seats in the House of Representatives and 54 seats in the Senate, this Congress began with the largest Republican majority since the 71st Congress of 1929 -- 1931. [SEP] Knowledge 3: 2014 United States Senate elections
The Republicans regained the majority of the Senate in the 114th Congress, which started in January 2015; the Republicans had not controlled the Senate since January 2007. They had needed a net gain of at least six seats to obtain a majority. They held all of their seats, and gained nine Democratic - held seats. Republicans defeated five Democratic incumbents:
Knowledge 1: United States Air Force
The Department of the Air Force is one of three military departments within the Department of Defense, and is managed by the civilian Secretary of the Air Force, under the authority, direction, and control of the Secretary of Defense. The senior officials in the Office of the Secretary are the Under Secretary of the Air Force, four Assistant Secretaries of the Air Force and the General Counsel, all of whom are appointed by the President with the advice and consent of the Senate. The senior uniformed leadership in the Air Staff is made up of the Chief of Staff of the Air Force and the Vice Chief of Staff of the Air Force. [SEP] Knowledge 2: 115th United States Congress
The One Hundred Fifteenth United States Congress is the current meeting of the legislative branch of the United States federal government, composed of the Senate and the House of Representatives. It meets in Washington, D.C. from January 3, 2017, to January 3, 2019, during the final weeks of the Obama presidency and the first two years of Donald Trump's presidency. The November 2016 elections maintained Republican control of both the House and Senate. [SEP] Knowledge 3: 2014 United States Senate elections
The Republicans regained the majority of the Senate in the 114th Congress, which started in January 2015; the Republicans had not controlled the Senate since January 2007. They had needed a net gain of at least six seats to obtain a majority. They held all of their seats, and gained nine Democratic - held seats. Republicans defeated five Democratic incumbents:

Answer: January 2015