United States Congressional Joint Committee on Reconstruction

The Joint Committee on Reconstruction, also known as the Joint Committee of Fifteen, was a joint committee of the 39th United States Congress that played a major role in Reconstruction in the wake of the American Civil War. It was created to "inquire into the condition of the States which formed the so-called Confederate States of America, and report whether they, or any of them, are entitled to be represented in either house of Congress.”‪
This committee also drafted the Fourteenth Amendment to the United States Constitution, though some changes were later made by the full Congress. The committee successfully recommended that Congress refuse to readmit southern states to representation in Congress until they ratified the Fourteenth Amendment.
Establishment and composition.
The committee was established on December 13, 1865, after both houses reached agreement on an amended version of a House concurrent resolution introduced by Representative Thaddeus Stevens of Pennsylvania to establish a joint committee of 15 members. Stevens and Senator William P. Fessenden of Maine served as co-chairmen. The joint committee divided into four subcommittees to hear testimony and gather evidence, the first subcommittee handled Tennessee; the second handled Virginia and the Carolinas; the third handled Georgia, Alabama, Mississippi, and Arkansas; and, the fourth subcommittee handled Florida, Louisiana, and Texas. In all, 144 witnesses were called to testify.
The joint committee included nine members from the House, and six from the Senate. The House members were Congressman Stevens (R-PA), Elihu Washburne (R-IL), Justin Morrill (R-VT), John A. Bingham (R-OH), Roscoe Conkling (R-NY), George Boutwell (R-MA), Henry Blow (R-MO), Henry Grider (D-KY), and Andrew Jackson Rogers (D-NJ). The Senate members were Chairman Fessenden (R-ME), James W. Grimes (R-IA), Jacob Howard (R-MI), George Henry Williams (R-OR), Ira Harris (R-NY), and Reverdy Johnson (D-MD).
Journal and report.
The decisions of the committee were recorded in its journal, but the journal did not reveal the committee's debates or discussions which were deliberately kept secret. However, once the committee had completed work on the proposed Fourteenth Amendment, several of its members spoke out, including Senator Howard who gave a long speech to the full Senate in which he presented "in a very succinct way, the views and the motives which influenced that committee, so far as I understand those views and motives." 
The joint committee also produced a report after Congress had already given final approval to send the draft Fourteenth Amendment to the states for ratification, and the report was widely disseminated. The report was signed by twelve of the committee's fifteen members, and a minority report was signed by the other three members: Johnson, Rogers, and Grider. The Joint Committee on Reconstruction was not revived at the next Congress.