The New York Stock Exchange has twice reversed course in the past week over whether to remove three Chinese telecommunications as it tries to comply with a Nov. 12 executive order banning transactions with companies deemed to be affiliated with the Chinese military, illustrating the confusion surrounding how U.S. businesses can ensure they are in compliance, according to trade lawyers. On Dec. 31, the NYSE announced it would delist China Mobile Communications, China Telecommunications Corp and China Unicom Limited to...