Former President Joe Biden's White House physician declined to answer questions before a House Committee as the GOP-led panel ramped up its investigation into Biden's age and health.
There are 1,288 confirmed measles cases across the U.S., the Centers for Disease Control and Prevention (CDC) said, warning that numbers are the highest they've been since 1992. Dr. Celine Gounder joins "CBS News 24/7" with more details.
