Original sentence: Others dismiss such allegations and point out that Bill Burkett, a known opponent of Bush, admits to supplying these documents to CBS.Some defenders of Dan Rather and CBS, including a member of Congress, have alleged that Republicans, possibly Karl Rove and / or Roger Stone , preempted the controversy over President Bush's service record in the Texas Air National Guard by supplying the false Killian documents used in the 60 Minutes report in order to discredit a potentially legitimate source of criticism (see dirty tricks)
Edited sentence: Defenders of Dan Rather and CBS, including a member of Congress, have alleged that Republicans, possibly Karl Rove and / or Roger Stone , preempted the controversy over President Bush's service record in the Texas Air National Guard by falsifying and supplying the version of the Killian documents used in the 60 Minutes report in order to discredit a potentially legitimate source of criticism (see dirty tricks).Republicans naturally dismiss such allegations and allege that Bill Burkett, a known opponent of Bush, was the only source of the documents