| | The U.S. Securities and Exchange Commission is investigating whether the multi-tiered pricing system used by stock exchanges favors large brokers at the expense of small ones, according to a person familiar with the matter. | | | Two U.S. House Democrats asked the White House and Justice Department to turn over documents that could show whether Republican President Donald Trump sought to intervene in the regulatory review of AT&T Inc's $85 billion acquisition of Time Warner Inc. | | | Chinese telecoms equipment maker Huawei Technologies sued the U.S. government on Thursday, saying a law limiting its American business was unconstitutional, ratcheting up its fight back against a government bent on closing it out of global markets. | | | Huawei Technologies Co Ltd has opened up a new front in its battle with the U.S. government by filing a lawsuit challenging a congressional ban on federal agencies' use of the Chinese technology company's products. | | | The U.S. State Department declined to comment on Thursday on a lawsuit against the United State by Chinese telecommunications equipment maker Huawei Technologies, and said Washington advocates for secure networks that are free from undue foreign government influence. | | | American Airlines Group Inc grounded 14 Boeing 737-800 airplanes on Thursday after complaints by pilots that overhead bins on some recently-retrofitted aircraft interiors were not closing, an American official said. | | | Wall Street's main indexes headed toward a fourth consecutive session of declines on Thursday, after Europe's central bank said it would defer interest rate hikes and offered banks a new round of cheap loans, raising fresh concerns about global economic growth. | | | (This March 6 story, corrects paragraph 2 to say company will be closing up to 40 stores, not 40 stores; also drops reference to on-trend clothing boosting demand for the Abercrombie brand) | | | Tesla Inc and SpaceX Chief Executive Officer Elon Musk's security clearance is being reviewed by the Pentagon after the billionaire smoked marijuana on a California comedian's podcast in September, Bloomberg reported on Thursday, citing a U.S. official. | | | A gauge of global stock markets retreated on Thursday while the U.S. dollar rose, as the European Central Bank postponed interest rate hikes to 2020 and launched a fresh round of cheap loans to banks in an effort to rejuvenate the euro zone economy. | | | | |