Trump loyalist subpoenaed John Brennan before resignation last week

Key Points:

• Joe diGenova, a Trump loyalist leading a grand jury investigation into Trump-related grievances, signed a subpoena for former CIA director John Brennan's testimony just before resigning from the Justice Department last week.
• Brennan's attorney revealed that Brennan is a target in a narrower investigation and a subject in a broader conspiracy probe related to issues at Mar-a-Lago and beyond, with testimony preliminarily scheduled for October 15.
• Brennan's legal team is seeking a court order to preserve government communications, including Signal messages, fearing potential destruction of evidence in what they allege is a politically motivated prosecution.
• Critics, including Brennan's lawyer, accuse the Justice Department of irregularities such as judge shopping by holding the grand jury in Fort Pierce, Florida, where a Trump-friendly judge presides, and of using disappearing messages to conceal investigative discussions.
• Following diGenova's resignation, the investigation is now overseen by U.S. Attorney Jason Reding Quiñones with assistance from Main Justice, amid ongoing concerns about the probe's conduct and scope.