Rupert Murdoch has called sexual misconduct allegations within Fox News "nonsense" and "largely political".
Speaking to Sky News after Disney struck a deal to buy 21st Century Fox, Mr Murdoch said there had been no sexual misconduct allegations at Fox News since chief executive Roger Ailes left over sexual misconduct accusations in 2016, despite two high profile Fox News hosts being ousted this year.
When asked how the allegations had harmed Fox News, Mr Murdoch said it was "all nonsense".
"There was a problem with our chief executive [Roger Ailes], sort of, over the years, isolated incidents," he said.
"As soon as we investigated it he was out of the place in hours, well, three or four days.
"And there's been nothing else since then. That was largely political because we're conservative.
"Now of course the liberals are going down the drain — NBC is in deep trouble. CBS, their stars."
Several high-profile men at Fox News have faced sexual misconduct accusations within the last two years, including Mr Ailes.
Fox News reportedly paid $US20 million in damages to a former anchor who alleges she was fired after refusing to have sex with Mr Ailes.
Former anchor Gretchen Carlson filed suit against Mr Ailes in July 2016, alleging he took her off a popular show and cut her pay because she refused to have a sexual relationship with him.
Mr Ailes always denied the allegations, but left Fox less than three weeks after the suit was filed, taking a $US40 million ($52 million) severance package.
Mr Ailes said Ms Carlson's suit was in retaliation for the network's decision not to renew her contract after disappointing ratings for her show.
Fox cut ties with news host Bill O'Reilly in April, after the firebrand conservative host was accused of sexually harassing multiple women.
And fellow host Eric Bolling left the network in September after he was accused of texting photos of his genitals to female staff members.
In recent months, sexual harassment claims have plagued other US networks, ones Mr Murdoch referred to as "the liberals".
In November, NBC fired Today host Matt Lauer just a week after CBS fired Charlie Rose over sexual misconduct allegations.