1. Updates to Yesterday's Q&A: Constitutional Arguments Behind Obama's VP Eligibility and Harris Garners Enough Delegate Votes for Nomination (1:15)2. Secret Service Director Resigns After Intense Congressional Hearing; Here's What Happened at the Hearing and What Happens Next (6:01)3. Quick Hitters: House Speaker and Minority Leader Announce Bipartisan Task Force to Investigate Assassination Attempt, VP Harris Holds First Presidential Campaign Rally, Harris Receives More Than $100M in Do...