Former federal prosecutor Gene Rossi on Monday criticized Attorney General William Barr's decision not to pursue an obstruction of justice charge against President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE.

"Did Mueller say, 'I want you, Bill Barr, to make the decision?' Or did Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE say, 'It's a jump ball and I want Congress to make the decision,'" Rossi told hosts Krystal Ball and Buck Sexton on Hill. TV's "Rising." "We need to know that answer."

"We had a jump ball. There were pros and cons as to whether to charge the president of the United States. That's in the letter," he continued. "It didn't say we could charge him. It didn't say we exonerate him."

"Bill Barr should not have decided that jump ball because ... he already determined that the possession arrow should go in favor of Donald Trump," Rossi said. "In June of 2018, he already said 'there's no obstruction.' So I have to criticize the attorney general — for whom I was very complimentary — that was a bad decision, and it taints this letter."

Rossi, who is a Democrat, has been critical of Trump in relation to the Russia probe.

His comments come after Barr released a summary of Mueller's report to Congress on Sunday, saying there was no evidence the Trump campaign coordinated or conspired with Russia during the 2016 presidential election.

Barr said he and Deputy Attorney General Rod Rosenstein, upon reviewing Mueller's findings, determined that the president did not obstruct justice.

Democrats have since called for all of the background materials that led to that conclusion to be released.

— Julia Manchester