Kennedy, tapped by Trump to lead HHS, struggled to ease concerns held by on-the-fence GOP senators over his long history of vaccine skepticism.

The Republican-led Senate hasn't yet rejected any of Donald Trump's Cabinet nominees, but Tulsi Gabbard and Robert F. Kennedy Jr. appear to be on shaky ground.

Analysis: North Carolina Sen. Thom Tillis has had to appeal to the Trumpian right to avoid a primary challenge. Eric Garcia ...

Republican Senator Bill Cassidy from Louisiana spoke about concerns regarding RFK Jr. Here's more on Bill Cassidy and his past in the medical field.