Thus, in their language, the bills target considerable protected speech on legitimate sites such as YouTube, Twitter, and Facebook." Ammori says that the PROTECT IP Act and the Stop Online Piracy Act "would miss their mark and silence a lot of non-infringing speech." The bill has been criticized by Abigail Phillips of the Electronic Frontier Foundation for not being specific about what constitutes an infringing web site. For example, if WikiLeaks were accused of distributing copyrighted content, U.S. search engines could be served a court order to block search results pointing to Wikileaks. Requiring search engines to remove links to an entire website altogether due to an infringing page would raise free speech concerns regarding lawful content hosted elsewhere on the site. Google chairman Eric Schmidt stated that the measures called for in PIPA are overly simple solutions to a complex problem, and that the precedent set by pruning DNS entries is bad from the viewpoint of free speech and would be a step toward less permissive Internet environments, such as China's. As the chairman of the company that owns the world's largest search engine, Schmidt said "If there is a law that requires DNSs to do X and it's passed by both Houses of Congress and signed by the President of the United States and we disagree with it then we would still fight it." Constitutional law expert Floyd Abrams said, "The Protect IP Act neither compels nor prohibits free speech or communication... the bill sets a high bar in defining when a website or domain is eligible for potential actions by the Attorney General...". Opponents of the legislation warn that the PROTECT IP Act would have a negative impact on online communities. Journalist Rebecca MacKinnon argued in an op-ed that making companies liable for users' actions could have a chilling effect on user-generated sites like YouTube. "The intention is not the same as China's Great Firewall, a nationwide system of Web censorship, but the practical effect could be similar", she says. Policy analysts for New America Foundation say this legislation would enable law enforcement to take down an entire domain due to something posted on a single blog: "Yes, an entire, largely innocent online community could be punished for the actions of a tiny minority." A legal analysis by the Congressional Research Service (CRS) notes concerns by opponents such as American Express and Google that the inclusion of a private cause of action would result in stifled Internet innovation, protect outdated business models and at the cost of an overwhelming number of suits from content producers. "Legislation should not include a private right of action that would invite suits by 'trolls' to extort settlements from intermediaries or sites who are making good faith efforts to comply with the law," Google Senior Vice-president and General Counsel Kent Walker has said in Congressional testimony.