9 AM ET: Harris begins campaign, more flights cancelled, heat for the West & more

<p>Vice President Kamala Harris is expected to speak at the White House later today in her first public appearance since President Joe Biden endorsed her to replace him in the 2024 race. A Democratic committee will meet to decide how the party will pick their new nominee. The Secret Service director will be grilled by House lawmakers today over security lapses at the rally where a gunman shot former President Donald Trump. More flights have been cancelled this morning as airlines try to recover from last week's outage. Plus, heat and wildfires are hitting the West.</p><p> </p><p>...