A group of House Democrats is circulating discussion drafts of antitrust bills that would force the biggest tech companies to change parts of their business models and curtail large acquisitions, according to copies obtained by CNBC.

While the drafts could still change significantly prior to their introduction, as currently written, they could require business model overhauls for Apple and Amazon by limiting their ability to operate marketplaces for products and apps while selling their own goods and apps on those same stores.

The bills would also make it harder for those companies  plus Facebook and Alphabet (Google’s parent company) to complete large mergers, and would force them to make it easier for users to leave their platforms with their data intact. CNBC couldn’t immediately learn when the drafts will be introduced.

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