December 9: Senate vote overturns vaccine mandates for private businesses. Instagram’s CEO testifies before Senate panel. Scott Peterson resentenced to life in prison – Savannah goes one-on-one with Peterson’s attorney.

<p>Key developments overnight in the fight against Covid including that Senate vote overturning the Biden administration’s vaccine mandate for private businesses. Plus, Instagram’s CEO has testified before a Senate panel on the potential dangers for young users. Also, Scott Peterson has been resentenced to life in prison without parole for the murders of his wife, Laci Peterson, and unborn child — Savannah Guthrie goes one-one-one with Peterson’s attorney.</p>