Smartmatic, an election technology company, sued the network for its "disinformation campaign" waged by people unhappy with President Biden's election victory.
The suit names Fox stars Lou Dobbs and Maria Bartiromo and Jeanine Pirro, as well as Trump allies Rudy Giuliani and Sidney Powell.
Many Fox News hosts, commentators and guests helped stoke the pro-Trump protests that became an assault on Congress. Among those influenced was Ashli Babbitt, who died while storming the Capitol.
Since Election Day, President Trump has attacked Fox News repeatedly, particularly its newsroom. Now comes chatter from Washington that he wants to start up his own media outfit to take on Fox.
Rupert Murdoch struck an alliance with President Trump early on, and Fox News has bolstered his presidency. With Joe Biden's victory, Fox is stepping warily to avoid alienating Trump supporters.
President Trump has turned to conservative media and stars for help in his fight to win reelection. They've rewarded him by promoting his questionable claims about the Bidens and the coronavirus.
Fox News viewers don't expect facts from Tucker Carlson, according to network lawyers who defended their star in a slander lawsuit filed by a woman who said she had an affair with President Trump.
The suit was filed in federal court in Manhattan by two former Fox News employees. Fox hosts Tucker Carlson and Sean Hannity are also named and accused of sexual misconduct.
A top writer for Fox News' Tucker Carlson resigns after CNN revealed his racist and sexist posts, reviving criticism of Carlson's commentaries. Carlson is set to address the controversy Monday.