WASHINGTON — Two men suspected of being Chinese intelligence officers have been charged with attempting to obstruct a U.S. criminal investigation and prosecution of Chinese tech giant Huawei, according to court documents unsealed Monday.The two men, Guochun He and Zheng Wang, are accused of trying to direct a person with the U.S. government whom they believed was a cooperator to provide confidential information about the Justice Department’s investigation, including about witnesses, trial evidence and potential …