"The amendments were so far out of left field they made a mockery of the whole thing," she said.
The section declaring Murdoch "not fit" passed by a vote of 6-4, with support from Labour and Liberal Democrat lawmakers, over opposition from Conservatives. Committee chairman Whittingdale, a Conservative, did not vote.
The report did not accuse either Murdoch of misleading Parliament but said three of their underlings had done so in testimony to the committee.
Longtime Murdoch right-hand man Les Hinton was criticized, as were Colin Myler, the last editor of News of the World, and Tom Crone, who was the paper's lawyer for decades.
In a statement, Myler said he stood by the evidence that he gave the committee.
The full House of Commons will have to rule on whether the three committed contempt by misleading the committee, "and, if so, what punishment should be imposed," the report says.
In a statement Tuesday to News Corp.'s 50,000 employees, Murdoch said the report "affords us a unique opportunity to reflect upon the mistakes we have made and further the course we have already completed to correct them."
He said that it was difficult for him to read many of its findings, "but we have done the most difficult part, which has been to take a long, hard and honest look at our past mistakes."
Murdoch continued, "We certainly should have acted more quickly and aggressively to uncover wrongdoing. We deeply regret what took place and have taken our share of responsibility for not rectifying the situation sooner."
He said News Corp. officials "have gone beyond what law enforcement authorities have asked of us, to ensure not only that we are in compliance with the law, but that we adhere to the highest ethical standards."
Murdoch said last week that if he had known the depth of the problem in 2007, when a private investigator and a Murdoch journalist were sent to prison for phone hacking, he "would have torn the place apart and we wouldn't be here today."
But he also suggested last week that key parts of the scandal have been overblown.
"The hacking scandal was not a great national thing until the Milly Dowler disclosure, half of which has been somewhat disowned by the police," Murdoch said.
He was referring to the revelation that people working for him had hacked into the voice mail of a missing 13-year-old who later turned out to have been murdered.
Murdoch was also grilled over his media empire's back-channel lobbying of the British government and said he learned of the existence of one of the key lobbyists only "a few months ago."
He said he was "surprised" by the extent of the contact by the employee, Fred Michel, with the British government as it considered a bid by News Corp. to take full ownership of British Sky Broadcasting.
That bid collapsed because of the phone-hacking scandal.
The scandal has also forced News Corp. to pay hundreds of thousands of pounds in compensation to the victims of phone hacking.
Rupert and James Murdoch have been hammered over the past year about what they knew about phone hacking by people working for them.
They have always denied knowing about the scale of the practice, which police say could have affected thousands of people, ranging from celebrities and politicians to crime victims and war veterans.