Trump supporters must be bound by the Mueller Report

Truth claim: 

If you accept Barr’s conclusion of “no collusion” you must accept the accuracy of everything in the Mueller Report.

Warrant

Because Barr’s conclusion was based on HIS OWN, STATED, ASSUMPTION that everything in the Mueller Report is “the factual record” of the actions of Russia and the Trump Campaign so, if you do not accept Barr’s assumption that this is the case then you CANNOT cite Barr’s characterization of Mueller’s report as accurate.

More colloquially, you can't have it both ways!

Ground Truth

"We accepted the statements in the report as the factual record," Barr said. "We did not go underneath it to see whether or not they were accurate. We accepted it as accurate."
Attorney General William Barr admitted he didn't look at the underlying evidence before concluding Trump didn't obstruct justice in the Russia probe (Business Insider)


“"After nearly two years of investigation, thousands of subpoenas, and hundreds of warrants and witness interviews, the Special Counsel confirmed that the Russian government-sponsored efforts to illegally interfere with the 2016 presidential election but did not find that the Trump campaign or other Americans colluded in those schemes," Barr said, adding that Americans "should be grateful" for the findings.
He said that Mueller's report also went on to "consider whether certain actions of the president could amount to obstruction of the Special Counsel investigation."

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"As I addressed in my March 24th letter, the Special Counsel did not make a traditional prosecutorial judgment regarding this allegation. Instead, the report recounts ten episodes involving the President and discusses potential legal theories for connecting these actions to elements of an obstruction offense," Barr explained. "After carefully reviewing the facts and legal theories outlined in the report, and in consultation with the Office of Legal Counsel and other Department lawyers, the Deputy Attorney General and I concluded that the evidence developed by the Special Counsel is not sufficient to establish that the President committed an obstruction-of-justice offense."
Barr affirms Mueller probe found no evidence of Russia-Trump collusion, prepares to release report (Fox News)

Reference

Ground Truth (Wikipedia)

Toulmin Method