Original sentence: )  This view was endorsed by Representative Maurice Hinchey (D.CBS News initially claimed the documents were "thoroughly vetted by independent experts" and that they "are convinced of their authenticity.Soon after the broadcast, as attacks on the authenticity of the documents mounted, one possibility advanced by some bloggers was that the documents had been forged by Republican supporters of Bush, perhaps even with the involvement of Bush's political strategist, Karl Rove.To date, however, there is no direct evidence of Rove's involvement
Edited sentence: )  This spin was floated by Representative Maurice Hinchey (D.CBS News initially tried to simply deny the evidence of forgery, asserting that the documents were "thoroughly vetted by independent experts" and that they "are convinced of their authenticity.Soon after the broadcast, as attacks on the authenticity of the documents mounted, one possibility advanced by some conspiracy theorists was that the documents had been forged by Republican supporters of Bush, perhaps even with the involvement of Bush's political strategist, Karl Rove.To date, however, there is no evidence of Rove's involvement