Having already investigated investors and brokerages in connection with a bungled summer stock-market rescue totaling more than $200 billion, Beijing is now probing the rescuers. Communist Party graft busters are investigating whether officials inside the China Securities Regulatory Commission used their knowledge of the rescue effort to enrich their friends or themselves, say agency officials familiar with the probe. In recent weeks, they have been taking officials, one by one, to a hotel close to the agency’s headquarters to press them to come clean or report on others, the officials say. The investigators also have set up shop on the top floor of the agency’s 22-story headquarters in downtown Beijing, banned agency officials from leaving China and set up a hotline and red mailbox in the lobby for anonymous tips, the officials say. Already two top CSRC officials have been removed from their posts and placed under investigation on […]