The 70-year-old lawyer and former presidential candidate was nominated by Donald Trump to be the next U.S. health secretary. Critics say he should be disqualified from the post. Robert F. Kennedy Jr., President-elect Donald Trump’s pick to head the Department of Health and Human Services, is ringing alarm bells and prompting sharp criticism from Democrats who are calling him everything from “dangerous, unqualified, and unserious” to “f*****g insane.”