Harris Reiterates Pledge To Sign Border Security Bill; Trump Holds First Rally Since Walz Joined Harris Ticket; Trump, Harris Agree To September 10 Debate; Gaza Civil Defense: 90-Plus Killed In Israeli Strike On Gaza School-Mosque Compound Overnight; Three Children Rescued From Flooded North Carolina Creek; Brazilian Passenger Plane Crash Outside Sao Paulo Kills 62; From D.A. To Democratic Nominee: Longtime Friend Talks Harris' Rise; Federal Election Subversion Case Delayed Until September. Aired 12-1p ET

[12:00:00] (BEGIN VIDEO CLIP) YUSRA MARDINI, TWO-TIME OLYMPIAN: -- bittersweet feeling having the Refugee Olympic team, but I am really incredibly proud of what they represent, of what they are [...]