US Attorney General refuses House testimony on Mueller report

US Attorney General William Barr has refused to testify to the Democratic-led House Judiciary Committee on his handling of the Russia inquiry. Barr had previously objected to a plan for lawyers to ask questions at Thursday's hearing.

Committee chairman Jerrold Nadler accused the White House of a "complete stonewalling of Congress".

The standoff raises the prospect that Barr, America's top legal official, could be held in contempt of Congress.

The Justice Department also said that it would not comply with a subpoena issued by Nadler asking for an unredacted version of Mueller's report as well as files from the investigation.

On Wednesday, Barr was grilled by a Senate panel about his decision to clear President Donald Trump of obstruction of justice.

His defence of his actions before the Republican-led Senate Justice Committee came after Special Counsel Robert Mueller, who led the investigative hunt for links between the 2016 Trump campaign and Russia, expressed frustration over the report summary.

Mueller is expected to testify to Congress later this month.

A Department of Justice statement said Nadler had placed conditions on the House Judiciary Committee hearing that were "unprecedented and unnecessary".

The department said that the planned move to have attorneys question Barr was unnecessary because most of the committee members were themselves, lawyers.

However, Nadler told reporters he believed that Barr was afraid to testify on Thursday given "how dishonest he has been".

"He is terrified of having to face a skilled attorney," he said, adding, "We plan on subpoenaing him if he decides not to show up. He can run but he can't hide."

"I hope and expect that the attorney general will think overnight and will be there as well," Nadler said.

He testified for the first time on Wednesday since the release of Mueller's 448-page report.

The special counsel did not establish any collusion between the Kremlin and the Trump campaign.

However, the report did not exonerate the president of obstruction of justice. It concluded the Republican president had repeatedly intervened with an inquiry that he feared would doom his presidency.

Barr, who was appointed by Trump, told the Senate Judiciary Committee he was "frankly surprised" Mueller did not conclude whether the president had tried to obstruct justice.

The attorney general added that he was "absolutely" confident in his own judgment that Trump did not unlawfully attempt to impede the investigation.

"I think that if he felt that he shouldn't go down the path of making a traditional prosecutorial decision, then he shouldn't have investigated," he said.

Barr's testimony came after a letter he had received from Mueller was made public.

In the document, the special counsel stated that Barr's summary "did not fully capture the context, nature and substance" of his report's findings, and caused "public confusion about critical aspects of the results of our investigation".

The letter, dated 27 March, expressed Mueller's frustration that Barr had not released the executive summaries prepared by the special counsel's team.

During the hearing, Barr said that Mueller was not concerned with the accuracy of the summary, but with how the media was reporting it.

"My understanding was his concern was not the accuracy of the statement of the findings in my letter, but that he wanted more out there to provide additional context to explain his reasoning and why he didn't reach a decision on obstruction," he said.

Barr argued that the objections to his summary should be nullified by the release of the report itself, calling the controversy surrounding the summary, and the consequent hearings, "mind-bendingly bizarre".

"I made clear from the beginning that I was putting out the report, as much of the report as I could, and it was clear it was going to take three weeks or so, maybe four, to do that," Barr said.