By LISA MASCARO and MARY CLARE JALONICK Associated Press (AP) — Robert F. Kennedy Jr. swept onto Capitol Hill late Monday,, as the anti-vaccine health guru from the famous political family reintroduced himself to senators, this time as President-elect Donald Trump’s pick to lead the nation’s Health and Human Services Department. Related Articles National Politics | Trump migrant deportations could threaten states’ agricultural economies National Politics | The GOP stoked fears of noncitizens voting.