https://www.reuters.com/article/us-tech-antitrust-facebook/state-attorney-general-group-probing-facebook-could-expand-to-40-source-idUSKBN1WM1X0 >An estimated 40 U.S. state attorneys general will participate in a probe of Facebook Inc, a source said on Monday, suggesting many more states want allegations of anticompetitive practices at the social media company investigated.