Jim Clyburn

President Biden is giving the nation's highest civilian honor to 19 people, a list that includes civil rights leaders, trailblazers and an unusually large contingent of high-profile Democrats.

The caucus vote is just the first of two key elections Pelosi needs to win. The full House formally votes on its next speaker on Jan. 3, the first day of Congress' next session.

The African-American South Carolina congressman's support comes just ahead of the Palmetto State primary, where Clinton needs a big victory to slow Bernie Sanders's momentum.