Mueller did not make the decision himself on whether to prosecute the President on obstruction.
The President went beyond the conclusions of Barr's letter, saying Sunday the findings were a "complete and total exoneration.".
Mueller defined coordination as an "agreement -- tacit or express -- between the Trump Campaign and the Russian government on election interference.".
"While this report does not conclude that the President committed a crime, it also does not exonerate him," Barr quotes Mueller as saying.
Democrats have demanded that Barr make Mueller's full report public and provide the special counsel's underlying evidence to Congress.
Mueller will be involved in the scrubbing of the report to remove secret grand jury material and any content related to ongoing investigations before it could be made public, Barr wrote.
The special counsel's investigation ended Friday after Mueller submitted his confidential report to Barr for review. »