Today is Robert F. Kennedy Jr.‘s confirmation hearing for Secretary of Health and Human Services. NBC News’ Vaughn Hillyard reports and Andrea Mitchell speaks with Dr. Kavita Patel about her concerns about his nomination.

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Robert F. Kennedy Jr., Kash Patel and Tulsi Gabbard, three of President Trump’s high-profile picks, on Thursday will make their cases for confirmation.

Watch the Senate Intelligence Committee hearing on President Trump’s nominee for national intelligence Director Tulsi Gabbard

Tulsi Gabbard, President Trump's pick for director of national intelligence, faces tough questions from senators on Russia, Syria and Edward Snowden.

Robert F. Kennedy Jr., Tulsi Gabbard and Kash Patel are each set to appear before lawmakers during a pivotal day of confirmation hearings Thursday.

Gabbard has faced criticism for a 2017 meeting with former Syrian President Bashar Assad, her position that Washington bears some responsibility for the war in Ukraine, and skepticism toward some findings of the U.S. intelligence community. Health and human services secretary nominee Robert F. Kennedy Jr. is set to testify at 10 a.m.

Sen. Angus King also pressed Tulsi Gabbard, who has been nominated by Trump to oversee national intelligence, on her past support for Edward Snowden, who leaked classified details of U.S. surveillance in 2013.

Here’s a look at the former Democrat’s personal life, following her appointment by President-elect Donald Trump as Director of National Intelligence.

Three of Trump’s most controversial nominees will testify before the Senate in what could be a make-or-break moment for his administration picks.

Tulsi Gabbard's nomination for intelligence chief sparks heated debate over her controversial past statements.