Sources tell CNN that federal prosecutors are using a second grand jury in south Florida and have heard testimony from multiple witnesses as part of the investigation into former President Trump’s handling of classified documents. Another witness is expected to testify tomorrow at a federal courthouse in Miami with at least one other witness expected after that. There’s been a grand jury in Washington, DC to help gather evidence and witness testimony so it’s unclear why the special counsel is using a special grand jury in Florida. CNN Chief Correspondent Kaitlan Collins joins AC360 to discuss how Trump and his allies are reacting to the news of this second grand jury. Plus, former New Jersey governor Chris Christie kicked off his 2024 presidential campaign with some sharp attacks against Trump calling him a “lonely, self-consumed mirror hog” who, by force of personality alone, represents a threat to the republic. CNN Senior Political Analyst Gloria Borger spoke with Christie’s senior adviser. She tells Anderson Cooper what the former New Jersey governor’s lane will be in this crowded field of candidates.To learn more about how CNN protects listener privacy, visit cnn.com/privacy

Sources exclusively tell CNN that an employee at former President Trump’s Florida resort drained the resort’s swimming pool last October which flooded a room that held computer servers containing surveillance video logs. At least one witness was asked about this incident by prosecutors as part of the federal investigation into the former President’s handling of classified documents. While it's unclear if the room was intentionally flooded or if it happened by mistake, the incident occurred amid a series of events that federal prosecutors found suspicious. Former FBI Deputy Director Andrew McCabe joins AC360 to discuss the new development and why he thinks the Department of Justice is investigating possible obstruction by the former President. Plus, CNN Senior Data Reporter Harry Enten has a special birthday surprise for Anderson!To learn more about how CNN protects listener privacy, visit cnn.com/privacy

Two sources tell CNN that attorneys for former President Trump haven’t found the classified document he referred to on a 2021 tape. Prosecutors issued a subpoena after asking a Trump aide in front of a grand jury about the audio recording at the former President’s golf course in Bedminster, New Jersey. On the tape, Trump acknowledges he held onto a classified Pentagon document about a potential attack on Iran. Conservative attorney George Conway tells Anderson Cooper this new revelation is “just another smoking gun in a smoking arsenal.”  Plus, CNN Senior Political Commentator and former Senior Adviser to Pres. Obama David Axelrod joins AC360 to discuss President Biden’s remarks from the Oval Office after averting “an economic crisis and an economic collapse.”To learn more about how CNN protects listener privacy, visit cnn.com/privacy

Former President Trump didn’t respond to questions from CNN about how classified documents ended up at his Bedminster, New Jersey  golf club. CNN learned from multiple sources that federal prosecutors have an audio recording from a 2021 meeting where Trump acknowledged he held onto a classified Pentagon document about a potential attack on Iran, which undercuts his argument that he declassified everything. CNN Chief Correspondent Kaitlan Collins joins AC360 to discuss Trump’s decision to not answer questions. Plus, the White House says President Biden is “fine” after tripping on a sandbag and falling on stage at the Air Force Academy commencement. CNN Chief White House Correspondent Phil Mattingly tells Anderson Cooper what Biden had to say about his fall when he returned to the White House.To learn more about how CNN protects listener privacy, visit cnn.com/privacy

CNN has exclusively learned from multiple sources that federal prosecutors have an audio recording from a 2021 meeting where former President Trump acknowledged he held onto a classified Pentagon document about a potential attack on Iran, which undercuts his argument that he declassified everything. Special counsel Jack Smith has focused on the meeting as part of the criminal investigation into Trump’s handling of national security secrets. Former Deputy FBI Director Andrew McCabe tells Anderson Cooper this evidence could be “really impactful.” Plus, CNN Chief Congressional Correspondent Manu Raju joins AC360 from Capitol Hill where the House is expected to vote on the debt limit bill after lawmakers approved the debate rule.To learn more about how CNN protects listener privacy, visit cnn.com/privacy