The data is there,” GOP Sen. Bill Cassidy bluntly told the nominee for secretary of health and human services.

Kennedy Jr. on Thursday struggled to answer questions about Medicare, refused to rule out a debunked link between autism and vaccines, and said he would entertain conspiracy theories about the Sept. 11,

In a series of aggressive, rapid-fire questions to Robert F. Kennedy Jr. about his plans to replace career scientists at the Maryland-based National Institutes for Health and reform the country’s biggest health agency at large,