Caroline Kennedy wrote a scathing letter Tuesday encouraging the U.S. Senate to deny the nomination of her cousin, Robert F. Kennedy Jr., to be President Donald Trump's health secretary. In the letter to senators obtained by the Associated Press, she called Robert F. Kennedy Jr. a "predator" who is addicted to power. Subscribe to LiveNOW from FOX! https://www.youtube.com/livenowfox?sub_confirmation=1 Where to watch LiveNOW from FOX: https://www.livenowfox.com/ Follow us @LiveNOWFOX on Twitter: https://twitter.com/livenowfox Raw and unfiltered. Watch a non-stop stream of breaking news, live events and stories across the nation. Limited commentary. No opinion. Experience LiveNOW from FOX.