The whistleblower in the IRS case against Hunter Biden joins to discuss the judges decision to put the president’s eldest son’s plea deal on hold. Prosecutors say the investigation is ongoing. Plus, reports of Senate Leader Mitch McConnell falling more times this year than previously known come as the 81-year-old Republican insists he is fine after he froze mid-speech yesterday for 23 seconds. And, tributes pour in after “Nothing Compares 2 U” singer Sinéad O’Connor dies at age 56. Also this Morning: 150 million Americans are under heat alerts, the US women’s soccer team tie with the Netherlands in a tense World Cup match, and Wagner Group leader Yevgeny Prigozhin is spotted in St. Petersburg.To learn more about how CNN protects listener privacy, visit cnn.com/privacy