who holds the privilege when it concerns attorney-client communication
Attorney–client privilege In the law of the United States, attorney–client privilege or lawyer–client privilege is a "client's right privilege to refuse to disclose and to prevent any other person from disclosing confidential communications between the client and the attorney."[1]
Shield laws in the United States A shield law is legislation designed to protect reporters' privilege. This privilege involves the right of news reporters to refuse to testify as to information and/or sources of information obtained during the news gathering and dissemination process. Currently the U.S. federal government has not enacted any national shield laws, but most of the 50 states do have shield laws or other protections for reporters in place.