| | WASHINGTON (Reuters) - U.S. lawmakers on Friday formally asked Facebook Inc's Mark Zuckerberg to explain at a congressional hearing how 50 million users' data got into the hands of political consultancy Cambridge Analytica. | | | NEW YORK (Reuters) - Wall Street's three major indexes tumbled in late afternoon trading on Friday as investors shied away from risky bets going into the weekend while they braced for a potential U.S. trade war with China. | | | (Reuters) - Dropbox Inc's shares soared by as much as 50 percent in their first day of trading on Friday as investors rushed to buy into the biggest technology initial public offering in more than a year even as the wider tech sector languished. | | | LONDON (Reuters) - A former Cambridge Analytica political consultant said the company's management misled the British public about work the firm did for a pro-Brexit group before the vote to leave the European Union, the Guardian reported on Friday. | | | (Reuters) - A British High Court judge has granted an application by the country's data protection watchdog for a warrant to search Cambridge Analytica's London offices, the Information Commissioner's Office (ICO) said on Friday. | | | BEIJING/SHANGHAI (Reuters) - China urged the United States on Friday to "pull back from the brink" as President Donald Trump's plans for tariffs on up to $60 billion in Chinese goods moved the world's two largest economies closer to a trade war. | | | WASHINGTON (Reuters) - The United States and South Korea could announce a trade deal next week that would cover an exemption from U.S. steel and aluminum tariffs and other trade issues, President Donald Trump and his commerce secretary said on Friday. | | | SAN DIEGO (Reuters) - Qualcomm Inc re-elected its board of directors on Friday with weak support from shareholders, who grilled the U.S. chipmaker over its strategy following its successful defense against a $117-billion hostile bid from Broadcom Ltd . | | | NEW YORK (LPC) - Uber Technologies' self-arranged term loan B was increased to US$1.5bn, justifying the taxi app company's unconventional approach to raising the loan and succeeding despite news that one of the company's self-driving cars had killed a pedestrian. | | | (Reuters) - Goldman Sachs Group Inc Chief Executive Lloyd Blankfein saw his overall compensation rise 9 percent, despite the investment bank's lackluster performance in 2017. | | | MEXICO CITY, March 23 (Reuters) - French oil major Total will begin drilling its first deepwater exploration well at a block it operates in the Gulf of Mexico in October, according to a plan approved on Friday by Mexico's National Hydrocarbons Commission (CNH). | | | | |