Here is more information about what Wolff has told Shaw:
Wolff then trusted me with a secret: that Senator Cooper, who called himself a “maverick” politician and was what Wolff called a “man of the truth,” became “very skeptical of the slipshod job being done by the commission staff and its rush to judgment” regarding the final report issued. Further, Wolff disclosed that Cooper, a staunch civil-rights activist despite being a Republican senator from the conservative state of Kentucky, uttered strong words during the times Wolff actually rode with him in the senator’s car to the hearings. Those words included “[the Commission] doesn’t get it, it’s more than Oswald, but Warren [Chief Justice Earl Warren] keeps pushing the Oswald-alone idea.” (pp. 350-351)
Wolff recalled the senator telling him, “There’s something very wrong going on with the Commission.”
Among the other recollections Wolff divulged to this author were that Cooper told him, “My own views are different than the Report conclusion.” The senator then added, “They say this [Oswald alone business] is good for God and the country, but there is internal corruption, and I don’t know why.” Cooper also told Wolff, “They [the Commission] knew about the Ruby connection to organized crime, but they don’t want to touch it but instead stick to the single bullet theory.” (Fighting for Justice, pp. 351-352).