Members of both parties have expressed worries that the hearing's scheduled format, which would give roughly two hours each to the judiciary and intelligence committees, doesn't provide enough time for all members to ask questions about Mueller's investigation of Russian interference in the 2016 USA election. Jerry Nadler and Adam Schiff, chairmen of the Judiciary Committee and Intelligence Committee respectively, will allow lawmakers more time to question Mueller.
The two men had tentatively agreed to appear before the House committees during a closed-door meeting to provide information about possible obstructions of justice committed by the president, as they were heavily involved in Mueller's probe.
Mueller was originally scheduled to appear before the committee on July 17.
Reports state that two hours had been allotted for the Judiciary Committee and the Intelligence Committee to question Mueller about the contents of his 448-page report regarding so-called "Russian interference" during the 2016 election.
He said he had decided himself that "any testimony from this office will not go beyond our report", during a statement read at the Department of Justice.
Completed in March after a more than two-year investigation into Russian election meddling in the 2016 presidential election, the Mueller report documents numerous instances of attempted collusion between Trump's campaign and Russia, but found no grounds for criminal conspiracy charges.
The report also listed 10 occasions when Trump allegedly attempted to obstruct the investigation.More news: Thousands join Hong Kong protest against Chinese traders
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"They want to hurt the president for the election, because I see what I'm running against", Mr. Trump said before the hearing was rescheduled.
Mueller will now appear before the House Judiciary Committee and House Intelligence Committee on July 24 for two separate hearings.
In a statement Saturday, Norton said she asked Chairman Elijah E. Cummings (D-Md.) for the delay, which he accepted.
One thing Judiciary members want to focus on in questioning Mueller is whether Trump would have been charged with a crime were he not president. Republicans spent Thursday and Friday slamming Democrats for cutting a deal that did not allow all committee members to question Mueller. A separate person familiar with that testimony said that the person is David Archey, the senior Federal Bureau of Investigation official who was involved in Mueller's probe.
It wasn't immediately clear why the new date made a difference or whether Nadler specifically might be able to relax some of the potential restrictions he'd been contemplating before.
"I appreciate news the chairman has taken seriously the concerns Judiciary Republicans raised this week, The new format will allow all Judiciary Republicans to question the special counsel on July 24", he tweeted. The House Intelligence Committee, in particular, wanted to speak to the deputies in closed session so they could dive into classified, counterintelligence details of the investigation.
"This committee got rolled", he said.