Are both News Corporation and Cerner American companies?
yes
News Corporation
The original News Corporation or News Corp. was an American multinational mass media corporation headquartered in New York City.
 It was the world's fourth-largest media group in 2014 in terms of revenue.
 Board members include prominent former Spanish prime minister José María Aznar.
Cerner
Cerner Corporation is an American supplier of health information technology (HIT) solutions, services, devices and hardware.
 As of April 2015 its products were in use in approximately 18,000 facilities around the world and the company had about 25,000 employees globally.
List of mergers and acquisitions by Symantec
Symantec is an American computer software company founded on March 1, 1982.
 It is an international corporation that specializes in selling security and information management software, and is listed on the NASDAQ-100 stock market index and Fortune 1000 list of the largest American companies.
 Gary Hendrix founded the company in 1982 with the help of a National Science Foundation grant.
 Symantec was originally focused on artificial intelligence-related projects, and Hendrix hired several Stanford University natural language processing researchers as the company's first employees.
 After the company's initial public offering in 1989, Hendrix left the company in 1991 and moved to Texas.
 The company has acquired 57 companies, purchased stakes in 2 firms, and divested 26 companies, in which parts of the company are sold to another company.
 Of the companies that Symantec has acquired, 50 were based in the United States.
 Symantec has not released the financial details for most of these mergers and acquisitions. News Corp
News Corporation (officially referred to as News Corp; trading as News Corp) is an American multinational mass media company, formed as a spin-off of the former News Corporation (as founded by Rupert Murdoch in 1979) focusing on newspapers and publishing.
 It is one of two companies which succeeded the former News Corporation, alongside 21st Century Fox—which consists of the old News Corporation's broadcasting and media properties, such as Fox Entertainment Group.
 The spin out was structured so that 21st Century Fox would be the legal successor and continuation of the old News Corporation, with the new News Corp being an entirely new company formed by a stock split. 21st Century Fox
Twenty-First Century Fox Inc. (stylized as 21st Century Fox, simply known as Fox, and also called 21CF) is an American multinational mass media corporation based in Midtown Manhattan, New York City.
 It was one of two companies formed from the 2013 spin-off of the publishing assets of News Corporation, as founded by Rupert Murdoch in 1979.
 21st Century Fox is the legal successor to News Corporation dealing primarily in the film and television industries and is currently the world's fourth largest media conglomerate (after Comcast, The Walt Disney Company and Time Warner).
 The other company, the "new" News Corporation, holds Murdoch's print interests (both owned by him and his family via a family trust with 39 percent controlling interest in each). Balkan News Corporation
Balkan News Corporation was a Bulgarian media company, which operated the bTV and Fox International Channels for Bulgaria.
 It was formerly owned by News Corporation.
 In April 2010 the bTV channel was bought by Central European Media Enterprises, who owned the channels PRO.BG and RING.BG in Bulgaria.
 The FOX channels in Bulgaria (Fox Life and Fox Crime) continue to air under the company brand of "FOX Intl.
 Channels BG", again owned by News Corporation. Krassimir Guergov
Krassimir Guergov (Bulgarian: Красимир Гергов ) is a Bulgarian businessman, who was born on 30 September 1961.
 He is an ex-officer from the Bulgarian secret services during the communist regime.
 His main business is related to advertising and media in Bulgaria.
 He completed "Sports Journalism", "Tourism, Alpinism and Orienteering" and specialised World Report at CNN, Atlanta and London.
 In 1994 he acquired the right to broadcast the American TV channel CNN in Bulgaria and created the first private national television in Bulgaria, broadcasting the CNN programme (Triada - CNN).
 He was also the creator of the first private national radio in Bulgaria, together with Radio Free Europe (RFE).
 His career is dedicated to building up the advertising and media business in Bulgaria, building up international relations to leading world media companies and attracting investments to the Bulgarian economy.
 He is actively investing in tourism development in Bulgaria and established golf complexes in Bulgaria.
 Krassimir Guergov is considered the most influential person and even a monopolist in advertising and media business in Bulgaria.
 He advises the biggest investors in Bulgarian media market: Balkan News Corporation (owned by News Corporation) – the company owning bTV, GTV, FoxLife and Central European Media Enterprises Ltd.- the company owning PRO BG and Ring BG.
 In his interview for newspaper Dnevnik of 24 July 2005, Krassimir Guergov shared his view that ""Advertising is not business only, advertising is vocation"". News International phone hacking scandal
The News International phone-hacking scandal is a controversy involving the now defunct "News of the World" and other British newspapers published by News International, a subsidiary of News Corporation.
 Employees of the newspaper were accused of engaging in phone hacking, police bribery, and exercising improper influence in the pursuit of stories.
 Whilst investigations conducted from 2005 to 2007 appeared to show that the paper's phone hacking activities were limited to celebrities, politicians, and members of the British Royal Family, in July 2011 it was revealed that the phones of murdered schoolgirl Milly Dowler, relatives of deceased British soldiers, and victims of the 7 July 2005 London bombings had also been hacked.
 The resulting public outcry against News Corporation and its owner Rupert Murdoch led to several high-profile resignations, including that of Murdoch as News Corporation director, Murdoch's son James as executive chairman, Dow Jones chief executive Les Hinton, News International legal manager Tom Crone, and chief executive Rebekah Brooks.
 The commissioner of London's Metropolitan Police Service, Sir Paul Stephenson, also resigned.
 Advertiser boycotts led to the closure of the "News of the World" on 10 July 2011, after 168 years of publication.
 Public pressure shortly forced News Corporation to cancel its proposed takeover of the British satellite broadcaster BSkyB. 2011 News Corporation scandals
In mid-2011, out of a series of investigations following up the "News of the World" royal phone hacking scandal of 2005–2007, a series of related scandals developed surrounding other News Corporation properties—where initially the scandal appeared contained to a single journalist at the "News of the World" (with the 2007 jailing of Clive Goodman and the resignation of then-editor Andy Coulson), investigations eventually revealed a much wider pattern of wrongdoing.
 This led to the closure of the "News of the World" on 10 July 2011, an apology by Rupert Murdoch in an advertisement in most British national newspapers, and the withdrawing of News Corporation's bid to take over the majority of BSkyB shares it did not own. News Corporation takeover bid for BSkyB
The News Corporation takeover bid for BSkyB was a proposed takeover of British Sky Broadcasting (BSkyB) by News Corporation, the media conglomerate of Rupert Murdoch.
 The bid was launched in June 2010, but was withdrawn in July 2011 following the News International phone hacking scandal.
 News Corporation already owned 39.1% of BSkyB, and held on to its stake following the collapse of the takeover bid.
 The takeover was an essential part of News Corporation's business strategy, not least as it would have made possible integration with other entities such as Sky Deutschland and Sky Italia. "
The Guardian" went so far as to say that, "Without a full takeover of BSkyB, News Corp's global satellite strategy would look an unco-ordinated mess."