Marjorie Taylor Greene had promoted baseless conspiracy theories and showed support for violence against Democrats.

The Democratic-controlled chamber passed the motion by 230-199.

Before the vote, the new Georgia congresswoman expressed regret for her past views, which included that school shootings and 9/11 were staged.

Eleven Republicans joined the entire Democratic caucus in voting to highlight Mrs Greene of her committee assignments on Thursday.

The Georgia Republican was widely known for her support of QAnon, a conspiracy theory which claims that former President Donald Trump was waging a clandestine war on a Satan-worshipping cabal of child-abusers and cannibals.

And before taking office, Mrs Greene also liked posts calling for violence against Democratic lawmakers, and suggested Muslims should not serve in government, among other comments online.

House Republican leader Kevin McCarthy condemned the remarks on Wednesday, but refused to punish Ms Greene, saying the comments date from before she was elected.

Ahead of the vote, top Democrat Nancy Pelosi said she was "profoundly concerned" by Republicans' "acceptance of an extreme conspiracy theorist".

On Thursday, Mrs Greene expressed regret for her past comments, but stopped short of an apology.

The 46-year-old also sought to pin blame on the media, saying they were "just as guilty as QAnon for promoting lies".

Mrs Greene has now been stripped from her two assignments on the education and and budget committees.

It is highly unusual for one party to intervene in another party's House committee assignments. They are typically the job of party leaders and are a vital channel for lawmakers to advance legislation.

There's also the symbolic value: veteran lawmakers may be rewarded with a position on the more prestigious committees.