As Republican lawmakers like Thom Tillis and Don Bacon face backlash for breaking from party lines, former Sen. Jeff Flake joins CBS Mornings to weigh in on growing partisanship in Congress. Dr. Celine Gounder joins CBS Mornings to break down the FDA-approved drug Lenacapavir, which is being called the closest step yet to an HIV vaccine. In "Dora and the Search for Sol Dorado," Samantha Lorraine plays a teenage Dora exploring the Amazon in a new twist on the beloved Nickelodeon series.