President Donald Trump seemed to question a well-documented part of Sen. Mitch McConnell's life — his childhood battle with polio — after the Kentucky Republican opposed vaccine skeptic Robert F. Kennedy Jr.'s confirmation Thursday as the nation's top health official.

For the third time in three weeks, former Senate GOP leader Mitch McConnell (R-Ky.) had a scathing explanation after he voted "no" on a Trump nominee. Why it matters: Freed from his leadership role and with a long history of antagonism between himself and President Trump,

A survivor of childhood polio, Sen. Mitch McConnell was the only Republican in the Senate to vote No. Here's how he explained his vote.