Watch live coverage as Dr. Mehmet Oz is sworn in this afternoon as administrator of the Centers for Medicare and Medicaid Services, which oversees programs that provide health care coverage for about half of the U.S. population. The Senate confirmed Oz in a party-line vote this month. For more context and news coverage of the most important stories of our day click here: https://www.msnbc.com/ » Subscribe to MSNBC: https://www.youtube.com/msnbc » Subscribe to MSNBC on TikTok https://www.tiktok.