Presidency of John F. Kennedy killed Oswald due to his own grief over Kennedy's death, but the assassination of Kennedy and the death of Oswald gave rise to enormous speculation that Kennedy had been the victim of a conspiracy. Kennedy was succeeded as president by Lyndon Johnson, who stated on November 27 that "no memorial or oration or eulogy could more eloquently honor President Kennedy's memory than the earliest possible passage of a civil rights bill for which he fought so long." President Johnson created the Warren Commission—chaired by Chief Justice Earl Warren—to investigate the assassination. The Warren Commission concluded that Oswald acted alone in
U.S. Commission on Evidence-Based Policymaking more than 200 federal agencies, testimony from more than 50 individuals, and additional written comments from 350 individuals. The commission also received feedback from President Barack Obama's administration. On September 7, 2017, the Commission issued its final report, "The Promise of Evidence-Based Policymaking" which outlined a vision for "a future in which rigorous evidence is created efficiently, as a routine part of government operations, and used to construct effective public policy." The final report includes findings and 22 recommendations for the President and Congress that were unanimously agreed to by the members of the Commission. The Commission outlined three overarching