| | NEW YORK (Reuters) - U.S. stocks dropped on Thursday, with each of the major Wall Street indexes suffering its biggest one-day percentage drop in six weeks, on the heels of an action by President Donald Trump to impose tariffs on up to $60 billion of Chinese imports. | | | GENEVA (Reuters) - China is preparing a range of responses to planned U.S. tariffs and will stand up to protectionism, but still hopes for dialogue, Beijing's ambassador to the World Trade Organization (WTO) said on Thursday. | | | WASHINGTON (Reuters) - U.S. President Donald Trump signed a presidential memorandum on Thursday that could impose tariffs on up to $60 billion of imports from China, although his action was far removed from threats that could have ignited a global trade war. | | | WASHINGTON/LONDON (Reuters) - Facebook Inc came under further pressure from lawmakers, investors, advertisers and users on Thursday, the day after Chief Executive Mark Zuckerberg admitted the social media network made mistakes in letting 50 million users' data get into the hands of political consultancy Cambridge Analytica. | | | WASHINGTON (Reuters) - President Donald Trump's administration urged a federal judge on Thursday to block AT&T Inc's proposed $85 billion merger with Time Warner Inc, saying the deal would hand the company a "weapon" to harm competition and raise consumer prices. | | | (Reuters) - Investor William Ackman has stepped out of his Nike sneakers, at least in a financial sense. | | | BOSTON (Reuters) - Goldman Sachs Group Inc Chief Executive Lloyd Blankfein said on Thursday sovereign country balance sheets look risky to him as deficits become a larger percentage of their gross domestic product. | | | (Reuters) - Citigroup Inc added restrictions on firearms sales for new retail-sector clients, the Wall Street bank said on Thursday, the strongest move to date by a major U.S. lender following last month's high school shooting in Florida. | | | NEW YORK (Reuters) - Chipotle Mexican Grill Inc on Thursday won the dismissal of an investor lawsuit claiming it concealed food safety risks, causing its stock to drop after widely publicized outbreaks of foodborne illnesses in 2014 and 2015. | | | LONDON (Reuters) - Four high-profile British lawmakers have called for Rupert Murdoch's Twenty-First Century Fox to be blocked from buying Sky , saying the mogul will be able to influence its news output despite promises to the contrary. | | | | |