; and (ii) determine whether to enter a sealing order for the individual in accordance with paragraph (4). (B) Opportunity to testify and offer evidence (i) Petitioner The petitioner may testify or offer evidence at the sealing hearing in support of sealing. (ii) Prosecutor The office of a United States attorney that receives notice under paragraph (1)(A) may send a representative to testify or offer evidence at the sealing hearing in support of or against sealing. (iii) Other individuals At the request of a petitioner, the district court in which the petition is filed shall issue a subpoena requiring an individual who receives notice under paragraph (1)(B) to testify or offer evidence at the sealing hearing as to the issues described in clauses (i) and (ii) of that paragraph. (C) Magistrate judges (i) In general A magistrate judge may preside over a hearing under this paragraph, and submit to a judge of the court proposed findings of fact and recommendations for the disposition, by a judge of the court, of any sealing petition filed under this subsection. (ii) Recommendations Not later than 14 days after being served with a copy, any party may serve and file written objections to the proposed findings and recommendations of the magistrate judge as provided by rules of court. A judge of the court shall make a de novo determination of those portions of the report or specified proposed findings or recommendations to which objection is made. A judge of the court may accept, reject, or modify, in whole or in part, the findings or recommendations made by the magistrate judge. The judge may also receive further evidence or recommit the matter to the magistrate judge with instructions. (D) Waiver of hearing If the petitioner and the United States attorney that receives notice under paragraph (1)(A) so agree, the court shall make a determination under paragraph (4) without a hearing. (4) Basis for decision (A) In general In determining whether to enter a sealing order with respect to protected information relating to a