President Biden, First Lady Pay Respects to Capitol Officer in Rotunda

President Biden and First Lady Jill Biden are among the dignitaries paying respects to Capitol PD Officer Brian Sicknick ... who was killed during the Jan. 6 insurrection.

The Bidens arrived, unannounced, Tuesday night at the Capitol and walked up to the table where Sicknick's remains were placed in the Capitol Rotunda -- the hallowed ground the officer was defending when he was killed.

The President's somber visit stands in stark contrast to his predecessor -- as former President Trump is about to stand trial in the Senate for inciting the very riot that cost Sicknick his life.

Several members of Congress -- including House Speaker Nancy Pelosi and Senate Majority Leader Chuck Schumer -- also paid their respects. Sicknick died in a hospital on January 7 from the injuries he'd suffered during the failed coup.

He is just the fifth private citizen to lie in honor at the Capitol. Two other Capitol cops -- killed in the line of duty in 1998 -- along with Rosa Parks in 2005 and Billy Graham in 2018 also got the honor.