(Reuters) -The U.S. Securities and Exchange Commission (SEC) said Indian authorities have not yet acted on its requests to serve summons and complaints to Adani Group executives over alleged securities fraud and a $265 million bribery scheme, a court filing showed on Friday. The case is one of the most high-profile attempts by a U.S. regulator to secure cross-border cooperation from Indian authorities in a matter involving one of that country’s largest conglomerates. The SEC told a New York district cour ...