; (2) by striking An acquisition and inserting the following: (1) In general An acquisition ; and (3) by adding at the end the following: (2) Clarification on prohibition on querying of collections of communications of United States persons and persons inside the United States (A) In general Except as provided in subparagraphs (B) and (C), no officer or employee of the United States may conduct a query of information acquired under this section in an effort to find communications of or about a particular United States person or a person inside the United States. (B) Concurrent authorization and exception for emergency situations Subparagraph (A) shall not apply to a query for communications related to a particular United States person or person inside the United States if— (i) such United States person or person inside the United States is the subject of an order or emergency authorization authorizing electronic surveillance or physical search under section 105, 304, 703, 704, or 705 of this Act, or under title 18, United States Code, for the effective period of that order; (ii) the entity carrying out the query has a reasonable belief that the life or safety of such United States person or person inside the United States is threatened and the information is sought for the purpose of assisting that person; (iii) such United States person or person in the United States is a corporation; or (iv) such United States person or person inside the United States has consented to the query. (C) Queries of federated data sets and mixed data If an officer or employee of the United States conducts a query of a data set, or of federated data sets, that includes any information acquired under this section, the system shall be configured not to return such information unless the officer or employee enters a code or other information indicating that— (i) the person associated with the search term is not a United States person or person inside the United States